Two-dimensional force loading test device

Abstract

The utility model provides a two-dimensional force loading test device. The two-dimensional force loading test device comprises a base, a counter-force beam frame, a vertical loading assembly and a horizontal loading mechanism. The counter-force beam frame is fixed on the base and extends towards the upper part of the base along the height direction of the two-dimensional force loading test device, and a test piece clamping seat vertically extending downwards towards the base is formed at the top of the counter-force beam frame. The vertical loading assembly is arranged on the base and located below the test piece clamping seat, and the vertical loading assembly is constructed to be capable of applying vertical force towards the test piece clamping seat on the test piece clamped and fixed between the test piece clamping seat and the vertical loading assembly. The horizontal loading mechanism is arranged on the base and located on one side of the vertical loading assembly, the horizontal loading mechanism comprises a horizontal loading assembly arranged in the horizontal direction, and one end of the horizontal loading assembly stretches out towards the test piece and makes contact with the side face of the test piece, so that horizontal force is applied to the test piece.

Description

Technical Field

[0001] The present application relates to the field of force loading testing, and in particular to a two-dimensional force loading testing device. Background Art

[0002] In the aircraft manufacturing process, a large number of load-bearing components such as jack top pads and suspension points are used as connectors for jacks or cranes. The reliability of these load-bearing components is related to the safety of personnel and aircraft structural components, so they must be loaded and tested before use. Since the force borne by most load-bearing components such as jack top pads is not a single directional force in the vertical or horizontal direction, but multiple directional forces including vertical and lateral directions, two-dimensional force loading can maximize the reproduction of real working conditions.

[0003] A two-dimensional force detection device is known, in which a horizontal force detection module detects the horizontal force of a moving body through a slider connected to the moving body and an elastic element arranged between the slider and pressure sensors at both ends, and a torque sensor of a vertical force detection module is connected to the horizontal force detection module, which can detect the torque of the horizontal force detection module rotating due to the vertical movement, thereby detecting the vertical force. The two-dimensional force detection device can detect the force of the moving body in two directions, but it cannot provide any loading force by itself.

[0004] A nanonewton-level two-dimensional force micro-motion test system with an overload protection device is also known, which includes horizontal and vertical force sensor assemblies connected to horizontal and vertical ball screw assemblies, and the horizontal and vertical force sensor assemblies are respectively provided with overload protection structures. The test system can test various types of forces such as nanonewton-level normal force, adhesion force, friction force, etc. generated by the bionic prototype, but the force value that can be detected is very small.

[0005] There is another two-dimensional force detection mechanism, which can detect the torque of the rotating part of the product, the push-pull force of the push-pull part of the product, or detect the aforementioned torque and push-pull force at the same time. However, this two-dimensional force detection mechanism cannot load force on the test piece, focuses on button force detection, has a complex structure and is expensive. Utility Model Content

[0006] Therefore, the technical problem to be solved by the present application is to overcome the problem that the existing detection device has a complex structure and cannot load two-dimensional force on the specimen, and provide a two-dimensional force loading test device.

[0007] Specifically, the present application provides a two-dimensional force loading test device, which is characterized in that the two-dimensional force loading test device includes:

[0008] Base;

[0009] A reaction beam frame is fixed on the base and extends upward from the base along the height direction of the two-dimensional force loading test device, and a specimen clamping seat is formed on the top of the reaction beam frame and extends vertically downward from the base;

[0010] A vertical loading assembly disposed on the base and below the specimen holding seat, the vertical loading assembly being configured to apply a vertical force toward the specimen holding seat on the specimen clamped and fixed between the specimen holding seat and the vertical loading assembly; and

[0011] A horizontal loading mechanism is arranged on the base and located on one side of the vertical loading assembly, and the horizontal loading mechanism includes a horizontal loading assembly arranged in a horizontal direction, wherein one end of the horizontal loading assembly extends toward the specimen and contacts the side of the specimen, thereby applying a horizontal force to the specimen.

[0012] The two-dimensional force loading test device provided in the present application can achieve clamping and fixing of the specimen by fixing or setting a reaction beam frame and a vertical loading assembly on a base, and can simultaneously apply horizontal and vertical loading forces to the specimen through the vertical loading assembly and a horizontal loading mechanism located on one side of the vertical loading assembly, so that the two-dimensional force loading test device can not only test the force on the specimen, but also load two-dimensional force to the specimen.

[0013] According to one embodiment of the present application, sensors for measuring the loading force value are respectively provided on the end surfaces of the vertical loading assembly and the horizontal loading assembly that are in contact with the specimen. The sensors provided on the end surfaces of the vertical loading assembly and the horizontal loading assembly can directly measure the vertical force and the horizontal force respectively applied by each loading assembly to the specimen, thereby facilitating real-time monitoring of the force value applied by the loading assembly to the specimen, so as to adjust each loading assembly as needed so that the force value applied by the loading assembly meets the requirements.

[0014] According to an embodiment of the present application, the vertical loading assembly and the horizontal loading assembly are respectively configured to continuously apply vertical force and horizontal force to the test piece within a predetermined time after the applied loading force value reaches the test force value. When the detected loading force value reaches the requirement, the loading force value is maintained based on the holding time determined according to the process requirements, so as to perform mechanical property tests on load-bearing components such as the jack top pad.

[0015] According to one embodiment of the present application, the sensor is electrically connected to a multi-channel data acquisition instrument to record the loading force value measured by the sensor through the multi-channel data acquisition instrument. The loading force value measured by the sensor is recorded through the multi-channel data acquisition instrument to determine the actual loading force value of the specimen and the allowable test force value loading time.

[0016] According to one embodiment of the present application, the vertical loading assembly and the horizontal loading assembly both include a hydraulic cylinder, each of which is in fluid communication with a manual hydraulic pump for adjusting the oil pressure, and a sensor is disposed on the end surface of the hydraulic cylinder in contact with the test piece. Using the hydraulic cylinder as a loading power to load force on the test piece can ensure the stability of the loading force value. Moreover, the hydraulic cylinder is in fluid communication with the manual hydraulic pump for adjusting the oil pressure, so that the oil pressure provided by the hydraulic pump can be manually adjusted in real time according to the loading force value detected by the sensor, thereby adjusting in real time the force value loaded on the test piece by the vertical loading assembly and / or the horizontal loading assembly, so as to ensure that the loading force value can reach the test force value accurately and quickly or at an appropriate speed.

[0017] According to one embodiment of the present application, the horizontal loading assembly includes a loading probe extending toward the specimen and contacting the side of the specimen, and the shape of the end surface of the loading probe that directly contacts the side of the specimen is designed to match the side shape of the specimen. By having the loading probe with the end surface matching the side shape of the specimen, it is possible to ensure that the horizontal loading assembly efficiently applies horizontal force to the specimen, avoiding unnecessary loss or loss of energy.

[0018] According to another embodiment of the present application, the test piece is a jack top pad, and the end surface of the loading probe that directly contacts the side of the jack top pad is in a semicircular buckle shape to snap into the side wall of the jack top pad.

[0019] According to another embodiment of the present application, the base includes a bracket, the vertical loading assembly is placed on the bracket, and the bottom of the reaction beam frame is fixed on the side wall of the bracket, so as to be supported and fixed directly above the vertical loading assembly. The vertical loading assembly and the reaction beam frame are fixed by the bracket, so as to facilitate the position arrangement and alignment between the vertical loading assembly and the reaction beam frame.

[0020] According to another embodiment of the present application, the support includes three support ribs evenly distributed along the periphery thereof, and the reaction beam frame includes three pairs of support frames, wherein the bottom end of each pair of support frames is fixed to the side wall of one of the three support ribs corresponding to its position by fasteners. The reaction beam frame is fixed to the three support ribs of the support by the three pairs of support frames, so as to realize the stable connection of the reaction beam frame on the support, and at the same time, the specimen clamping seat of the reaction beam frame is firmly supported and fixed just above the vertical loading assembly.

[0021] According to another embodiment of the present application, a first recess is formed on the lower surface of the specimen clamping seat for receiving a portion of the specimen, and a second recess is formed on the top surface of the bracket for accommodating the bottom of the vertical loading assembly. The first recess enables rapid positioning of the specimen on the specimen clamping seat, thereby facilitating the use of the reaction beam frame and the vertical loading assembly to clamp and fix the specimen. The second recess enables rapid positioning of the vertical loading assembly on the bracket, thereby facilitating the positional relationship between the specimen clamping seat and the vertical loading assembly through the structural and dimensional design of the bracket and the reaction beam frame.

[0022] According to another embodiment of the present application, the horizontal loading mechanism further comprises a motion platform configured to move up and down in a height direction, and the horizontal loading assembly is mounted on the motion platform. The height of the horizontal loading assembly can be adjusted by the motion platform, so that the height position of the horizontal loading assembly is adapted to the height position of the workpiece, thereby ensuring that the horizontal loading assembly can load a horizontal square force onto the specimen.

[0023] According to another embodiment of the present application, the motion platform has an L-shaped plate, and the upper surface of the leg portion of the L-shaped plate extending toward the specimen in the horizontal direction is provided with a support block for supporting the horizontal loading assembly. The horizontal loading assembly can be stably supported by the support block to ensure that the horizontal loading assembly applies a horizontal force to the specimen.

[0024] According to another embodiment of the present application, the two-dimensional force loading test device also includes a mobile trolley for placing a base, and the mobile trolley includes a platform arranged below the base, a handle installed on the side wall of the platform, and a plurality of rollers arranged below the platform and configured to roll on the ground. The two-dimensional force loading test device arranged on the mobile trolley can be moved by the rollers at the bottom of the mobile trolley, thereby facilitating on-site testing. At the same time, the handles arranged on the side walls of the platform facilitate the staff to operate and pull or push the mobile trolley.

[0025] According to another embodiment of the present application, the mobile trolley further comprises a plurality of retractable support columns symmetrically arranged on the side wall of the platform along the circumference of the platform, and the plurality of retractable support columns are configured to enable the plurality of rollers to be out of contact with the ground after being extended. The retractable support columns arranged on the side wall of the platform can suspend the rollers of the mobile trolley, thereby facilitating the support of the two-dimensional force loading test device fixedly mounted on the mobile trolley through the retractable support columns.

[0026] Based on the common sense in this field, the above-mentioned preferred implementation modes can be combined arbitrarily to obtain the preferred implementation modes of the present application.

[0027] The positive and progressive effects of the above-mentioned implementation methods of the present application are:

[0028] 1. Through the simple structural design and position coordination of the reverse beam frame and the vertical loading component, it is possible to apply a vertical force in the vertical direction to the specimen while clamping and fixing the specimen, thus simplifying the clamping and fixing structure of the specimen;

[0029] 2. By setting an independent horizontal loading component on one side of the vertical loading component, it is possible to apply forces in both horizontal and vertical directions to the specimen independently and simultaneously, which is suitable for loading tests of load-bearing components such as jack top pads.

[0030] 3. By setting a sensor on the end surface where the loading assembly contacts the test piece, the loading force value applied by the loading assembly to the test piece can be directly measured, thereby facilitating real-time monitoring of the loading force value and adjusting the loading force value applied by the loading assembly when necessary, so that it can quickly and accurately reach the test force value.

[0031] 4. The two-dimensional force loading test device can be easily moved by the mobile trolley to facilitate on-site testing, and the two-dimensional force loading test device fixedly mounted on the mobile trolley can be supported by the retractable support column on the mobile trolley when necessary. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of a two-dimensional force loading test device according to a preferred embodiment of the present application.

[0033] Figure 2 for Figure 1 Schematic diagram of the structure of the vertical loading component.

[0034] Figure 3 for Figure 1 Schematic diagram of the structure of the horizontal loading component. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the implementation mode of the present application will be clearly and completely described below in conjunction with the accompanying drawings showing multiple embodiments according to the present application. It should be understood that the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments recorded in the present application, all other embodiments obtained by ordinary technicians in this field without spending creative work will fall within the scope of protection of the present application.

[0036] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including", "having" and the like in the specification and claims of this application and the above-mentioned figure descriptions are open-ended words, which are used to clearly indicate the existence of the features or components, but do not exclude the existence or addition of one or more other features, mechanisms or combined features, mechanisms.

[0037] like Figure 1 As shown, the two-dimensional force loading test device provided in the present application includes a base 1, a reaction beam frame 2 fixed on the base 1, a vertical loading assembly 3 arranged on the base 1, and a horizontal loading mechanism 4 arranged on the base 1 and located on one side of the vertical loading assembly 3. The reaction beam frame 2 extends toward the top of the base 1 along the height direction of the two-dimensional force loading test device, and a specimen clamping seat 21 extending vertically downward toward the base 1 is formed on its top. The vertical loading assembly 3 is located below the specimen clamping seat 21, and can apply a vertical force toward the specimen clamping seat 21 to the specimen 5 clamped and fixed between the specimen clamping seat 21 and the vertical loading assembly 3. The horizontal loading mechanism 4 includes a horizontal loading assembly 41 arranged in the horizontal direction, and one end of the horizontal loading assembly 41 extends toward the specimen 5 and contacts the side of the specimen 5, thereby applying a horizontal force to the specimen 5.

[0038] Moreover, if Figures 1 to 3 As shown, the vertical loading assembly 3 and the horizontal loading assembly 41 are respectively provided with sensors 31 and 411 for measuring the loading force value on the end surfaces in contact with the specimen 5, and the sensors 31 and 411 are both electrically connected to the multi-channel data acquisition instrument 7 arranged on the top of the reaction beam frame 2, so as to record the loading force value measured by the sensors 31 and 411 through the multi-channel data acquisition instrument 7. The use of high-precision direct contact force value sensors 31 and 411 and the matching multi-channel data acquisition instrument 7 to collect the force loaded by the vertical loading assembly 3 and the horizontal loading assembly 41 on the specimen 5 can accurately and reliably measure the loading force value in real time.

[0039] In the two-dimensional force loading test, the sensors 31 and 411 can detect in real time the vertical force and horizontal force values ​​applied by the vertical airborne component 3 and the horizontal loading component 41 on the specimen 5, and after the loading force values ​​applied by the vertical loading component 3 and the horizontal loading component 41 reach the test force value, the vertical force and horizontal force are continuously applied to the specimen 5 within a predetermined time to maintain the test force value. The force value maintenance time is usually determined according to the process requirements, and is generally 5 minutes unless there are special requirements.

[0040] Preferably, if Figure 2 and Figure 3As shown, the vertical loading assembly 3 and the horizontal loading assembly 41 both include hydraulic cylinders 32 and 412, and each hydraulic cylinder is in fluid communication with a manual hydraulic pump (not shown) for adjusting the oil pressure, and the sensor 31 is arranged on the end surface of the hydraulic cylinder 32 in contact with the test piece 5, and the sensor 411 is arranged on the end surface of the hydraulic cylinder 412 in contact with the test piece 5. By applying force to the test piece 5 by the hydraulic cylinders 32 and 412, the stability of the loading force value can be ensured. Moreover, according to the loading force value detected by the sensors 32 and 412, when, for example, the loading force value does not reach the test force value, the oil pressure provided by the hydraulic pump is manually adjusted, and the loading force value applied to the test piece 5 by the hydraulic cylinders 32 and 412 can be adjusted and controlled in real time, so as to quickly adjust the loading force value to the test force value.

[0041] In the connection between the reaction beam frame 2 and the base 1, as Figure 1 As shown, the base 1 may include a bracket 11, and the bottom of the reaction beam frame 2 is fixed on the side wall of the bracket 11, so as to be supported and fixed directly above the bracket 11. Optionally, the bracket 11 includes three support ribs 111 evenly distributed along its periphery. At this time, the reaction beam frame 2 includes three pairs of support frames 22, and the bottom end of each pair of support frames 22 is fixed to a side wall of the three support ribs 111 corresponding to its position by fasteners, thereby achieving the fixing of the reaction beam frame 2 on the base 1.

[0042] In the connection between the vertical loading assembly 3 and the base 1 , the vertical loading assembly 3 is placed on the bracket 11 , and a second recess is formed on the top surface of the bracket 11 for accommodating the bottom of the vertical loading assembly 3 to position the vertical loading assembly 3 .

[0043] Preferably, a first recessed portion (not shown) for receiving the top portion and other parts of the test piece 5 is formed on the lower surface of the test piece holding seat 21 .

[0044] Preferably, the central axis of the specimen holding seat 21 and the central axis of the second recess are designed to be on the same straight line, so that the central axis of the specimen holding seat 21 and the central axis of the vertical loading assembly 3 are on the same straight line. More preferably, the central axis of the specimen holding seat 21 and the central axes of the first recess and the second recess are all on a straight line, so that the central axis of the specimen 5 and the central axis of the vertical loading assembly 3 are on the same straight line.

[0045] Alternatively, if Figure 2 As shown, a bushing 33 is further arranged between the specimen 5 and the sensor 31, and the vertical loading assembly 3 applies force uniformly to the specimen 5 via the bushing 33. Preferably, a third recess 331 for receiving the bottom of the specimen 5 is formed on the top upper surface of the bushing 33, and the central axis of the third recess 331 is on the same straight line as the central axis of the first recess.

[0046] Optionally, the horizontal loading assembly 41 includes a loading probe 413 extending toward the specimen 5 and contacting the side of the specimen 5, and the shape of the end surface 414 of the loading probe 413 directly contacting the side of the specimen 5 is designed to match the side shape of the specimen 5. For example, Figure 3 As shown, when the test piece 5 is a cylindrical load-bearing component such as a jack top pad, the end surface 414 of the loading probe 413 that directly contacts the side of the jack top pad is in a semicircular buckle shape to engage the side wall of the jack top pad.

[0047] Preferably, the horizontal loading mechanism 4 further comprises a motion platform 42 capable of moving up and down in the height direction, and the horizontal loading assembly 41 is mounted on the motion platform 42. More preferably, an L-shaped plate 43 is further provided on the motion platform 42, and a support block 44 for supporting the horizontal loading assembly 41 is provided on the upper surface of a leg portion 431 of the L-shaped plate 43 extending toward the specimen 5 in the horizontal direction. The horizontal loading assembly 41 can be stably supported by the support block 44 to ensure that the horizontal loading assembly 41 applies a horizontal force to the specimen 5. Preferably, the support block 44 is also configured to support the sensor 411 of the horizontal loading assembly 41, and the shapes of the surfaces of the support block 44 and the sensor 411 contacting each other are designed to match each other.

[0048] Alternatively, if Figure 1 As shown, the two-dimensional force loading test device also includes a mobile trolley 6 for placing the base 1, and the mobile trolley 6 includes a platform 61 arranged below the base 1, a handle 62 installed on the side wall of the platform 61, and a plurality of rollers 63 arranged below the platform 61 and capable of rolling on the ground. The two-dimensional force loading test device can be moved to a desired position by the mobile trolley 6, which is convenient for on-site two-dimensional force loading testing of load-bearing components. The mobile trolley 6 may also include a plurality of retractable support columns 64 symmetrically arranged on the side wall of the platform 61 along the circumference of the platform 61, and the plurality of retractable support columns 64 can make the plurality of rollers 63 disengage from the ground after being extended, so as to facilitate the two-dimensional force loading test device to be supported and fixed at the current position after moving to the destination, so as to use the two-dimensional force loading test device to perform subsequent two-dimensional force loading test experiments.

[0049] The two-dimensional force loading test device provided by the present application can apply a vertical force in the vertical direction to the specimen 5 while clamping and fixing the specimen 5 through the simple structural design and position coordination of the reverse beam frame 2 and the vertical loading component 3, thereby simplifying the clamping and fixing structure of the specimen 5. In addition, the two-dimensional force loading test device can simultaneously apply forces in the horizontal and vertical directions to the specimen 5 by using the independent vertical loading component 3 and the horizontal loading component 41, by setting an independent horizontal loading component 41 on one side of the vertical loading component 3, and is suitable for loading tests of load-bearing components such as jack top pads.

[0050] Moreover, by providing the sensor 31 on the end surface of the vertical loading component 3 in contact with the specimen 5 and the sensor 411 on the end surface of the horizontal loading component 41 in contact with the specimen 5, the loading force value applied by each loading component on the specimen 5 can be directly measured, thereby facilitating real-time monitoring of the loading force value and adjusting the loading force value applied by the loading component when necessary, so that it can quickly and accurately reach the test force value.

[0051] In addition, the two-dimensional force loading test device can be conveniently moved by the mobile cart 6 to facilitate on-site testing, and when necessary, the two-dimensional force loading test device fixedly mounted on the mobile cart 6 can be supported by the retractable support column 64 on the mobile cart 6 to facilitate two-dimensional force loading test experiments at a fixed workstation.

[0052] Although the specific implementation methods of the present application are described above, those skilled in the art should understand that these are only examples, and the protection scope of the present application is defined by the appended claims. Those skilled in the art may make various changes or modifications to these implementation methods without departing from the principles and essence of the present application, but these changes and modifications all fall within the protection scope of the present application.

Claims

1. A two-dimensional force loading test device, characterized in that: The two-dimensional force loading test device comprises: Base; A reaction beam frame fixed on the base and extending toward the top of the base along the height direction of the two-dimensional force loading test device, wherein a specimen clamping seat extending vertically downward toward the base is formed on the top of the reaction beam frame; A vertical loading assembly disposed on the base and below the specimen holding seat, the vertical loading assembly being configured to apply a vertical force toward the specimen holding seat on the specimen clamped and fixed between the specimen holding seat and the vertical loading assembly; and A horizontal loading mechanism is arranged on the base and located on one side of the vertical loading assembly, and the horizontal loading mechanism includes a horizontal loading assembly arranged in a horizontal direction, wherein one end of the horizontal loading assembly extends toward the specimen and contacts the side of the specimen, thereby applying a horizontal force to the specimen.

2. The two-dimensional force loading test device according to claim 1, characterized in that: The vertical loading assembly and the horizontal loading assembly are respectively provided with sensors for measuring the loading force value on the end surfaces in contact with the test piece.

3. The two-dimensional force loading test device according to claim 2, characterized in that: The vertical loading assembly and the horizontal loading assembly are respectively configured to continuously apply the vertical force and the horizontal force to the test piece within a predetermined time after the applied loading force value reaches the test force value.

4. The two-dimensional force loading test device according to claim 2, characterized in that: The sensor is electrically connected to a multi-channel data acquisition instrument so as to record the loading force value measured by the sensor through the multi-channel data acquisition instrument.

5. The two-dimensional force loading test device according to claim 2, characterized in that: The vertical loading assembly and the horizontal loading assembly each include a hydraulic cylinder, each of the hydraulic cylinders is fluidly connected to a manual hydraulic pump for adjusting oil pressure, and the sensor is disposed on an end surface of the hydraulic cylinder in contact with the test piece.

6. The two-dimensional force loading test device according to claim 2, characterized in that: The horizontal loading assembly includes a loading probe extending toward the specimen and contacting a side surface of the specimen. The shape of an end surface of the loading probe directly contacting the side surface of the specimen is designed to match the shape of the side surface of the specimen.

7. The two-dimensional force loading test device according to claim 6, characterized in that: The test piece is a jack top pad, and the end surface of the loading probe that directly contacts the side of the jack top pad is in a semicircular buckle shape to clamp the side wall of the jack top pad.

8. The two-dimensional force loading test device according to claim 1, characterized in that: The base comprises a bracket, the vertical loading assembly is placed on the bracket, and the bottom of the reaction beam frame is fixed on the side wall of the bracket, so as to be supported and fixed directly above the vertical loading assembly.

9. The two-dimensional force loading test device according to claim 8, characterized in that: The bracket includes three supporting ribs evenly distributed along its periphery, and the reaction beam frame includes three pairs of supporting frames, wherein the bottom end of each pair of the supporting frames is fixed to the side wall of one of the three supporting ribs corresponding to its position by fasteners.

10. The two-dimensional force loading test device according to claim 8, characterized in that: A first recess is formed on the lower surface of the specimen holding seat for receiving a portion of the specimen, and a second recess is formed on the top surface of the bracket for accommodating the bottom of the vertical loading assembly.

11. The two-dimensional force loading test device according to claim 1, characterized in that: The horizontal loading mechanism further includes a moving platform configured to be able to move up and down along the height direction, and the horizontal loading assembly is installed on the moving platform.

12. The two-dimensional force loading test device according to claim 11, characterized in that: The motion platform has an L-shaped plate, and a support block for supporting the horizontal loading assembly is provided on the upper surface of a leg portion of the L-shaped plate extending toward the test piece in a horizontal direction.

13. A two-dimensional force loading test device according to any one of the preceding claims, characterized in that: The two-dimensional force loading test device also includes: A mobile trolley for placing the base comprises a platform arranged below the base, a handle installed on the side wall of the platform, and a plurality of rollers arranged below the platform and configured to be able to roll on the ground.

14. The two-dimensional force loading test device according to claim 13, characterized in that: The mobile vehicle further comprises a plurality of retractable support columns symmetrically arranged on the side wall of the platform along the circumference of the platform, wherein the plurality of retractable support columns are configured to enable the plurality of rollers to be out of contact with the ground after being extended.

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