Mechanical test device

Abstract

The utility model belongs to the technical field of mechanical tests, and particularly relates to a mechanical test device, which comprises a test assembly, a test piece is placed in the test assembly, and the test assembly is used for testing the test piece; the protection assembly is arranged in the test piece; the internal monitoring assembly is arranged in the protection assembly and is used for monitoring the internal change of the test piece in the test process; the control assembly is in electric signal connection with the internal monitoring assembly, and the control assembly is used for controlling the internal monitoring assembly to work and receiving signals obtained by the internal monitoring assembly. During working, the protection assembly is arranged in the test piece, the test piece is placed in the test assembly, the test assembly is controlled by the control assembly to test the test piece, the evolution process in the test piece in the test process is monitored in real time through the internal monitoring assembly, and real and specific observation data of the internal state of the test piece are provided. And the precision and reliability of test data are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of mechanics test technology, especially relates to a mechanics test device. BACKGROUND

[0002] In the field of mechanics test, the traditional monitoring method mainly relies on external observation or indirect inversion to push the internal evolution process of the test piece. These methods usually measure the deformation or stress on the surface of the test piece through external sensors (such as strain gauges, displacement sensors, etc.), and estimate the stress state and deformation of the test piece through inversion calculation. However, these external monitoring methods have obvious limitations.

[0003] The traditional monitoring method mainly relies on the measurement of surface stress and deformation, and cannot realize real-time monitoring of microscopic changes such as crack propagation and stress concentration in the test piece. Since the internal evolution process of the test piece cannot be directly observed, external observation can only provide indirect speculation results, which have low accuracy and reliability. When the internal state is inverted through external measurement data, there is a lot of uncertainty. The inversion process often relies on assumed models and initial conditions, and the complex mechanical behavior of the test piece is difficult to accurately invert. The existing monitoring technology cannot provide real-time internal evolution data during the test, and usually needs to analyze the data after the test to obtain the changes of the internal state. This method cannot reflect the immediate changes in the test piece in time, and cannot be dynamically adjusted. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of mechanics test device to solve the above problems.

[0005] To achieve the above object, the utility model provides the following scheme:

[0006] A kind of mechanics test device, comprising:

[0007] Test component, test piece is placed in test component, and the test component is used to test the test piece;

[0008] Protective component is arranged in the test piece;

[0009] Internal monitoring component is arranged in the protective component, and is used to monitor the internal change of the test piece in the test process;

[0010] Control component is electrically connected with the internal monitoring component, and the control component is used to control the internal monitoring component and receives the signal obtained by the internal monitoring component.

[0011] In the internal evolution monitoring device of the mechanics test test piece of the utility model, the protective component comprises:

[0012] A flexible inner tube is arranged in the test piece, and the internal monitoring assembly is arranged in the flexible inner tube and in contact with the inner side wall of the flexible inner tube;

[0013] A dust cover is fixed to the top end of the flexible inner tube.

[0014] In the internal evolution monitoring device for the whole process of the mechanical test piece, the internal monitoring assembly comprises:

[0015] A plurality of bearing plates are arranged in the flexible inner tube, and the plurality of bearing plates are arranged along the length direction of the flexible inner tube;

[0016] A monitoring structure is arranged on the bearing plate.

[0017] In the internal evolution monitoring device for the whole process of the mechanical test piece, the monitoring structure comprises:

[0018] An endoscope lens is fixedly installed at the center of the top surface of the bearing plate;

[0019] A plurality of light sources are fixedly connected to the edge of the top surface of the bearing plate, and the plurality of light sources are arranged at equal intervals in the circumferential direction;

[0020] A plurality of stress deformation gauges are fixedly installed in a plurality of installation grooves, the plurality of installation grooves are arranged at equal intervals in the circumferential direction at the outer edge of the bearing plate, and the test end of the stress deformation gauge protrudes from the installation groove and abuts against the inner side wall of the flexible inner tube;

[0021] A transmission line is electrically connected to the endoscope lens, the light source and the stress deformation gauge at one end, and the other end of the transmission line is electrically connected to the control assembly.

[0022] In the internal evolution monitoring device for the whole process of the mechanical test piece, the test assembly comprises:

[0023] A test machine cavity body is internally provided with a pressurizing mechanism;

[0024] A test machine bearing disc is horizontally arranged on the top surface of the test machine cavity body, the test machine bearing disc is fixedly connected to the pressurizing end of the pressurizing mechanism, and the test piece is placed on the top surface of the test machine bearing disc;

[0025] A test machine top plate is horizontally arranged directly above the test machine cavity body, and the test machine top plate is fixedly connected to the test machine cavity body through a plurality of vertically arranged test machine support columns;

[0026] A test machine upper pressing disc is fixedly installed on the bottom surface of the test machine top plate and is arranged in a vertically corresponding manner with the test machine bearing disc.

[0027] In the mechanical test specimen whole-process internal evolution monitoring device, the top surface of the testing machine bearing disc is provided with a bearing base, the bottom end of the flexible endoscope is detachably connected at the center of the top surface of the bearing base, a transmission hole is formed in the bearing base, the transmission line is arranged in the transmission hole, and the transmission line is electrically connected with the control assembly.

[0028] In the mechanical test specimen whole-process internal evolution monitoring device, the control assembly comprises:

[0029] A demodulator is electrically connected with the transmission line through a signal line.

[0030] A terminal processor is electrically connected with the demodulator.

[0031] A display is electrically connected with the terminal processor.

[0032] Compared with the prior art, the mechanical test specimen whole-process internal evolution monitoring device has the following advantages and technical effects:

[0033] During work, the protection assembly is arranged in the specimen, the specimen is arranged in the test assembly, the test assembly is controlled by the control assembly to test the specimen, the internal evolution process of the specimen during the test is monitored in real time by the internal monitoring assembly, real and specific observation data of the internal state of the specimen are provided, and the precision and reliability of the test data are improved. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor under the premise of the drawings:

[0035] Fig. 1 It is a schematic diagram of the overall structure of the present application;

[0036] Fig. 2 It is a schematic diagram of the structure of the test assembly in the present application;

[0037] Fig. 3 It is a schematic diagram of the structure of the internal monitoring assembly in the present application;

[0038] Fig. 4 It is a cross-sectional view of the internal monitoring assembly in the present application;

[0039] Wherein, 1-1, test machine top plate; 1-2, test machine upper pressure disc; 1-3, test machine support column; 1-4, test machine bearing disc; 1-5, test machine cavity; 2-1, test piece; 2-2, internal viewing hole; 2-3, dust cover; 2-4, flexible internal viewing tube; 2-5, internal viewing lens; 2-6, transmission line; 2-7, bearing base; 2-8, conducting hole; 2-9, light source; 2-10, stress deformation meter; 3-1, signal line; 3-2, display; 3-3, terminal processor; 3-4, demodulator. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0041] In order to make the above-mentioned purposes, features and advantages of the utility model more apparent and easy to understand, the utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0042] Reference Figs. 1 to 4 The utility model discloses a mechanical test device, comprising:

[0043] Test assembly, test piece 2-1 is placed in test assembly, and test assembly is used for testing test piece 2-1;

[0044] Protection assembly is arranged in test piece 2-1;

[0045] Internal monitoring assembly is arranged in protection assembly and is used for monitoring the internal change of test piece 2-1 in the test process;

[0046] Control assembly is electrically connected with internal monitoring assembly, and control assembly is used for controlling the work of internal monitoring assembly and receiving the signal obtained by internal monitoring assembly.

[0047] When working, protection assembly is arranged in test piece 2-1, test piece 2-1 is placed in test assembly, test piece 2-1 is tested by control assembly, the evolution process of test piece 2-1 in the test process is monitored in real time by internal monitoring assembly, the real and specific observation data of the internal state of test piece 2-1 are provided, and the precision and reliability of test data are improved.

[0048] In a feasible scheme, the protection assembly comprises:

[0049] The flexible inner tube 2-4 is arranged in the test piece 2-1, and the internal monitoring assembly is arranged in the flexible inner tube 2-4 and in contact with the inner side wall of the flexible inner tube 2-4.

[0050] The dust cover 2-3 is fixed to the top end of the flexible inner tube 2-4.

[0051] The test piece 2-1 is provided with an inner viewing hole 2-2, and the flexible inner tube 2-4 is arranged in the inner viewing hole 2-2 and in contact with the side wall of the inner viewing hole 2-2.

[0052] The flexible inner tube 2-4 is made of transparent material and has deformability, and does not support the test piece 2-1, and can transmit force to the internal monitoring assembly when the test piece 2-1 deforms, and facilitates the internal monitoring assembly to monitor the stress state and deformation of the test piece 2-1 in real time.

[0053] In one possible implementation, the internal monitoring assembly includes:

[0054] The plurality of bearing plates are arranged in the flexible inner tube 2-4, and the plurality of bearing plates are arranged along the length direction of the flexible inner tube 2-4.

[0055] The monitoring structure is arranged on the bearing plate.

[0056] The bearing plate bears the monitoring structure and fixes the monitoring structure in the flexible inner tube 2-4; the number of the bearing plates can be adjusted according to actual needs, which is not limited herein.

[0057] In one possible implementation, the monitoring structure includes:

[0058] The inner viewing lens 2-5 is fixedly installed at the center of the top surface of the bearing plate.

[0059] The plurality of light sources 2-9 are fixedly connected to the edge of the top surface of the bearing plate, and the plurality of light sources 2-9 are arranged at equal intervals in the circumferential direction.

[0060] The plurality of stress deformation gauges 2-10 are respectively fixedly installed in the plurality of mounting grooves, and the plurality of mounting grooves are arranged at equal intervals in the circumferential direction at the outer edge of the bearing plate, and the test end of the stress deformation gauge 2-10 extends out of the mounting groove and abuts against the inner side wall of the flexible inner tube 2-4.

[0061] The transmission line 2-6 is electrically connected to the inner viewing lens 2-5, the light source 2-9 and the stress deformation gauge 2-10 at one end, and the other end of the transmission line 2-6 is electrically connected to the control assembly.

[0062] Since the monitoring structure is located in the test piece 2-1, there is no light, and it is not convenient for the endoscope lens 2-5 to observe the crack propagation, deformation and other micro changes in the test piece 2-1, so a plurality of light sources 2-9 are arranged to facilitate the endoscope lens 2-5 to observe the crack propagation, deformation and other micro changes in the test piece 2-1;

[0063] The test end of the stress deformation meter 2-10 protrudes from the installation groove and abuts against the inner side wall of the flexible endoscope tube 2-4. When the inside of the test piece 2-1 deforms, the test end of the stress deformation meter 2-10 is extruded, so that the stress change inside the test piece 2-1 is measured.

[0064] In a feasible scheme, the test assembly comprises:

[0065] The test machine cavity 1-5 is internally provided with a pressurizing mechanism;

[0066] The test machine bearing disc 1-4 is horizontally arranged on the top surface of the test machine cavity 1-5, and the test machine bearing disc 1-4 is fixedly connected with the pressurizing end of the pressurizing mechanism. The test piece 2-1 is placed on the top surface of the test machine bearing disc 1-4.

[0067] The test machine top plate 1-1 is horizontally arranged directly above the test machine cavity 1-5, and the test machine top plate 1-1 is fixedly connected with the test machine cavity 1-5 through a plurality of vertically arranged test machine support columns 1-3. The plurality of test machine support columns 1-3 are circumferentially and equally spaced.

[0068] The test machine upper pressing disc 1-2 is fixedly installed on the bottom surface of the test machine top plate 1-1 and is arranged in a corresponding upper and lower manner with the test machine bearing disc 1-4.

[0069] The pressurizing mechanism is a prior art, which is not described herein.

[0070] In a feasible scheme, a bearing base 2-7 is arranged on the top surface of the test machine bearing disc 1-4. The bottom end of the flexible endoscope tube 2-4 is detachably connected at the center of the top surface of the bearing base 2-7. The bearing base 2-7 is internally provided with a transmission hole 2-8. The transmission line 2-6 is arranged in the transmission hole 2-8. The transmission line 2-6 protrudes from the transmission hole 2-8 and is electrically connected with the control assembly.

[0071] The bearing base 2-7 is used for fixing the flexible endoscope tube 2-4.

[0072] In a feasible scheme, the control assembly comprises:

[0073] The demodulator 3-4 is electrically connected with the transmission line 2-6 through the signal line 3-1.

[0074] The terminal processor 3-3 is electrically connected with the demodulator 3-4.

[0075] The display 3-2 is electrically connected with the terminal processor 3-3.

[0076] The utility model has the following technical effects:

[0077] Real internal evolution monitoring: By directly observing the internal evolution process of the test piece 2-1 through the endoscope 2-5, the micro changes such as crack propagation, stress concentration, and deformation in the internal test piece 2-1 can be monitored in real time. Unlike traditional methods that rely on external measurement and inversion, the utility model can provide real and specific observation data of the internal state of the test piece 2-1, greatly improving the accuracy and reliability of the monitoring.

[0078] Eliminate inversion error and improve monitoring accuracy: By the endoscope 2-5, the light source 2-9, and the stress deformation meter 2-10, the stress and deformation data in the internal test piece 2-1 are directly obtained, and the external inversion model is no longer relied on. In this way, possible errors in the inversion process are avoided, and the accuracy of internal evolution monitoring is improved.

[0079] Real-time monitoring and dynamic feedback: The utility model transmits the real-time monitoring data to the demodulator 3-4 through the transmission line 2-6, and analyzes the data through the terminal processor 3-3, which can feedback the dynamic changes in the mechanical test process in time. Test personnel can real-time view the evolution state of the internal test piece 2-1 through the display, and adjust the test parameters according to the data, so as to realize more accurate test control.

[0080] Reduce interference and improve data accuracy: The dust cover 2-3 and the flexible endoscope 2-4 are made of transparent material and have low strength, which does not interfere with the mechanical behavior in the internal test piece 2-1. Unlike traditional external sensors, the endoscopic technology of the utility model avoids the influence of additional sensors on the mechanical properties of the test piece 2-1, ensuring the authenticity and reliability of the monitoring data.

[0081] Multifunctional integration and flexible adjustment: The utility model integrates endoscopic monitoring, stress deformation monitoring, data transmission, and feedback control system in one system, which has high flexibility and adjustability. According to different test requirements, the installation position and number of the light source 2-9 and the stress deformation meter 2-10 can be flexibly adjusted to meet different monitoring requirements and provide more accurate mechanical behavior data.

[0082] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0083] The above-described embodiments are merely preferred modes of the present application, and are not intended to limit the scope of the present application. Various modifications and improvements to the technical solutions of the present application made by those of ordinary skill in the art without departing from the design spirit of the present application shall fall within the protection scope of the present application as defined by the claims.

Claims

1. A mechanical testing apparatus, characterized in that, include: The test assembly contains a specimen (2-1) placed inside it, and the test assembly is used to test the specimen (2-1). A protective component is disposed within the specimen (2-1); An internal monitoring component, disposed within the protective component, is used to monitor the internal changes of the specimen (2-1) during the test; A control component is electrically connected to the internal monitoring component, and the control component is used to control the operation of the internal monitoring component and to receive signals acquired by the internal monitoring component.

2. The mechanical testing device according to claim 1, characterized in that, The protective components include: A flexible inner sight tube (2-4) is disposed inside the specimen (2-1), and the internal monitoring component is disposed inside the flexible inner sight tube (2-4) and contacts the inner wall of the flexible inner sight tube (2-4); A dust cover (2-3) is fixed to the top of the flexible inner viewing tube (2-4).

3. The mechanical testing device according to claim 2, characterized in that, The internal monitoring component includes: Multiple support plates are disposed inside the flexible inner viewing tube (2-4), and the multiple support plates are disposed along the length direction of the flexible inner viewing tube (2-4); The monitoring structure is mounted on the support plate.

4. The mechanical testing device according to claim 3, characterized in that, The monitoring structure includes: An internal viewing lens (2-5) is fixedly installed at the center of the top surface of the support plate; Multiple light sources (2-9) are fixed to the top edge of the support plate, and the multiple light sources (2-9) are arranged at equal intervals around the periphery; Multiple stress deformation gauges (2-10) are fixedly installed in multiple mounting slots. The multiple mounting slots are equally spaced around the outer edge of the bearing plate. The test end of the stress deformation gauge (2-10) extends out of the mounting slot and abuts against the inner sidewall of the flexible inner sight tube (2-4). One end of the transmission line (2-6) is electrically connected to the end-view lens (2-5), the light source (2-9), and the stress deformer (2-10), and the other end of the transmission line (2-6) is electrically connected to the control component.

5. A mechanical testing device according to claim 4, characterized in that, The test components include: The testing machine cavity (1-5) is equipped with a pressurization mechanism; The testing machine support plate (1-4) is horizontally arranged on the top surface of the testing machine cavity (1-5). The testing machine support plate (1-4) is fixedly connected to the pressure end of the pressure mechanism. The specimen (2-1) is placed on the top surface of the testing machine support plate (1-4). The top plate (1-1) of the testing machine is horizontally positioned directly above the cavity (1-5) of the testing machine. The top plate (1-1) of the testing machine is fixedly connected to the cavity (1-5) of the testing machine through multiple vertically positioned support columns (1-3). The upper pressure plate (1-2) of the testing machine is fixedly installed on the bottom surface of the top plate (1-1) of the testing machine and is arranged vertically and vertically corresponding to the bearing plate (1-4) of the testing machine.

6. The mechanical testing apparatus according to claim 5, characterized in that, A support base (2-7) is placed on the top surface of the test machine support plate (1-4). The bottom end of the flexible inner viewing tube (2-4) is detachably connected to the center of the top surface of the support base (2-7). A transmission hole (2-8) is opened in the support base (2-7). The transmission line (2-6) passes through the transmission hole (2-8) and extends out of the transmission hole (2-8) and is electrically connected to the control component.

7. A mechanical testing device according to claim 4, characterized in that, The control component includes: The demodulator (3-4) is electrically connected to the transmission line (2-6) via the signal line (3-1); The terminal processor (3-3) is electrically connected to the demodulator (3-4); The display (3-2) is electrically connected to the terminal processor (3-3).

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