Loading device for applying pressure to measured surface

Abstract

The utility model relates to the technical field of mechanical testing, in particular to a loading device for applying pressure to a tested surface, which comprises a lifting platform, an XYZ-axis platform, a rigid connecting rod, a pressure sensor, a spring damper, a front end device and a pose sensor, the XYZ-axis platform is arranged below the lifting platform, the upper end of the rigid connecting rod is connected with the XYZ-axis platform, and the lower end of the rigid connecting rod is connected with the pressure sensor; the spring damper is arranged at the lower end of the pressure sensor; the front end device is fixedly connected with the lower end of the spring damper, and the pose sensor is arranged on the front end device. The problem that a conventional loading means cannot uniformly load on a non-horizontal plane can be solved, the load can be safely and stably applied to the measured plane under the non-horizontal and moving working conditions, and flexible operation can be carried out according to different experiment requirements.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical testing technology, specifically relating to a loading device for applying pressure to a surface under test. Background Technology

[0002] In the performance testing of various machines, structures, or components, it is often necessary to apply loads to the tested surface to verify its strength, stiffness, or working performance. Existing loading devices can typically maintain a stable applied force when the tested surface is horizontal or undergoing only simple movements. If the tested surface undergoes more complex movements (e.g., non-horizontal, three-dimensional multi-degree-of-freedom movements), traditional loading methods struggle to continuously follow or guarantee stable pressure. Furthermore, using heavy objects for loading carries the risk of falls, which can easily cause equipment damage or personal safety issues. Therefore, how to maintain stable and safe load application under complex movements or postures has become a problem that urgently needs to be solved by those skilled in the art.

[0003] In view of the above, this utility model is hereby proposed. Utility Model Content

[0004] In order to solve the above-mentioned technical problems in the prior art, the present invention provides a loading device for applying pressure to the surface under test, which can automatically adjust the loading position according to the posture and movement of the surface under test, and maintain a predetermined pressure value during the loading process.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A loading device for applying pressure to a measured surface includes a lifting platform, an XYZ axis platform, a rigid connecting rod, a pressure sensor, a spring damper, a front end device, and a position sensor.

[0007] The XYZ axis platform is located below the lifting platform. The upper end of the rigid connecting rod is connected to the XYZ axis platform, and the lower end is connected to the pressure sensor. The spring damper is located at the lower end of the pressure sensor. The front end device is fixedly connected to the lower end of the spring damper, and the posture sensor is located on the front end device.

[0008] Furthermore, it also includes a pressure control device connected to a pressure sensor and an XYZ axis platform.

[0009] Furthermore, it also includes a pressure display device, which is mounted on the pressure control device.

[0010] Furthermore, the pressure sensor and the pressure control device are fixedly connected by fasteners or brackets.

[0011] Furthermore, the pressure sensor is located at the upper end of the spring damper retaining connection.

[0012] Furthermore, it also includes a pose holding controller, which is connected to the pose sensor and the XYZ axis platform to form a closed-loop control system.

[0013] Furthermore, the pose sensor and the pose holding controller are connected via a signal line or wirelessly.

[0014] This utility model provides a loading device for applying pressure to a test surface, which solves the problem that conventional loading methods cannot uniformly apply loads on non-horizontal surfaces. It enables safe and stable application of loads to the test surface under non-horizontal and motion conditions, and allows for flexible operation to meet different experimental requirements. At the same time, it avoids personal injury that may be caused by heavy loading. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the loading device provided in an embodiment of the present utility model.

[0016] Explanation of reference numerals in the attached figures:

[0017] 1. Lifting platform; 2. XYZ axis platform; 3. Rigid connecting rod; 4. Pressure sensor; 5. Spring damper; 6. Front end device; 7. Pressure control device; 8. Position holding controller; 9. Position sensor. Detailed Implementation

[0018] The technical solution of this utility model will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are not all embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] It should be noted that, unless otherwise specifically stated, the relative arrangement and numerical expressions of the components and steps described in these embodiments should not be construed as limiting the scope of this utility model.

[0020] The following description of exemplary embodiments is merely illustrative and is not intended to limit the present invention or its application or use in any way. Techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail herein, but where applicable, such techniques, methods, and apparatus should be considered part of this specification.

[0021] Example 1

[0022] See also Figure 1As shown, this embodiment provides a loading device for applying pressure to a surface under test. The loading device can move with the sample to maintain a stable pressure value and an unchanged application direction. Specifically, it includes a lifting platform 1, an XYZ axis platform 2, a rigid connecting rod 3, a pressure sensor 4, a pressure control device 7, a spring damper 5, a front end device 6, a posture holding controller 8, and a posture sensor 9.

[0023] The lifting platform 1 is used to adjust the distance between the device and the surface being measured. If the position or height of the surface being measured changes significantly, the lifting structure can be used for quick alignment. The XYZ axis platform is located below the lifting platform and connected by adjustable fixing parts or guide rails. It applies pressure and adjusts its position as needed to maintain stable pressure. If the surface being measured is not initially horizontal, the rigid connecting rod 3 is rotated by adjusting the angle of the XYZ axis platform 2. The rigid connecting rod 3 drives the front end device to be perpendicular to the surface being measured. An angle adjustment mechanism can also be provided between the XYZ axis platform 2 and the lifting platform 1 to compensate for the angle according to the tilt angle of the surface being measured, so as to achieve the effect of always being perpendicular to the surface being measured.

[0024] The rigid connecting rod 3 has an adjustable length to improve its applicability. One end of the rigid connecting rod 3 is connected to the XYZ axis platform 2, and the other end is connected to the spring damper 5 via a hinge. The XYZ axis platform 2 compresses the spring damper 5, generating pressure. After reaching the set pressure, it stops moving and enters a pressure holding state. Loading with the spring damper 5 replaces the heavy block loading method, greatly reducing the loading area. Other elastic or deformable elements can also be used to meet different pressure requirements. Generally, the spring damper 5 of this application is selected when the pressure value is large, while other devices can be used to replace the spring damper 5 when the pressure is small.

[0025] The front-end device 6 is fixedly connected to the spring damper 5 and directly contacts the surface being measured. It is equipped with a posture sensor 9, which detects changes in the posture or displacement of the surface being measured, providing a basis for automatic following loading. A pressure sensor 4 is mounted on the spring damper 5 to detect the pressure applied to the surface being measured. The pressure control device 7 is connected to the pressure sensor 4 and the XYZ axis platform 2. When the pressure reaches the set value, it controls the XYZ axis platform 2 to stop and fine-tunes it to bring the pressure within the control range. It then continuously monitors the pressure and displays the current pressure status on the display device.

[0026] In normal loading conditions, the pose holding controller 8 is not activated. When the measured surface moves, the pose holding controller 8 is activated to achieve the effect of moving and loading with the measured surface. The pose holding controller 8 is connected to the pose sensor 9 and the control unit of the XYZ axis platform 2 to form a closed-loop control, and is connected via signal lines or wirelessly. When the measured surface moves or tilts during loading, the pose holding controller 8 can control the XYZ axis platform 2 to synchronously adjust its position and angle to maintain uniform and stable pressure on the measured surface.

[0027] By adjusting the lifting platform 1 to make the front end device 6 perpendicular and in close contact with the surface being measured, and setting the required pressure, the XYZ axis platform 2 is started to squeeze the spring damper 5 in the vertical direction until the set pressure is reached. According to the experimental requirements, if it is a static experiment, the damper is reset after the set time is reached; if it is a dynamic experiment, the posture holding controller 8 is activated. When the surface being measured is displaced, the spatial displacement of the posture sensor 9 is assumed to be (X1, Y1, Z1). At this time, the posture holding controller 8 controls the XYZ axis platform 2 to move the corresponding distance (X1, Y1, Z1) so that the spring damper 5 maintains a stable pressure.

[0028] In summary, this utility model has the following advantages:

[0029] 1. Makes loading large loads simpler and more accurate when loading small test surfaces. By replacing the traditional heavy block loading method with damper loading, the loading area can be greatly reduced.

[0030] 2. Even if the surface being measured is tilted or has a complex angle, the pressure can still be evenly distributed on the surface being measured, thus improving the accuracy of loading.

[0031] 3. Maintain stable pressure loading when the measured surface is under load and in motion;

[0032] 4. It avoids the use of heavy objects for loading, thereby eliminating such potential dangers and ensuring the safety of experimental operators.

[0033] The above specific embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A loading device for applying pressure to a surface being measured, characterized in that, It includes a lifting platform, XYZ axis platform, rigid connecting rod, pressure sensor, spring damper, front end device and posture sensor; The XYZ axis platform is located below the lifting platform. The upper end of the rigid connecting rod is connected to the XYZ axis platform, and the lower end is connected to the pressure sensor. The spring damper is located at the lower end of the pressure sensor. The front end device is fixedly connected to the lower end of the spring damper, and the posture sensor is located on the front end device.

2. The loading device for applying pressure to the surface under test according to claim 1, characterized in that, It also includes a pressure control device, which is connected to a pressure sensor and an XYZ axis platform.

3. The loading device for applying pressure to the surface under test according to claim 2, characterized in that, It also includes a pressure display device, which is mounted on the pressure control device.

4. The loading device for applying pressure to the surface under test according to claim 2, characterized in that, The pressure sensor and the pressure control device are fixedly connected by fasteners or brackets.

5. The loading device for applying pressure to the surface under test according to claim 2, characterized in that, The pressure sensor is located at the upper end of the spring damper.

6. The loading device for applying pressure to the surface under test according to claim 1, characterized in that, It also includes a pose holding controller, which is connected to the pose sensor and the XYZ axis platform to form a closed-loop control system.

7. The loading device for applying pressure to the surface under test according to claim 6, characterized in that, The pose sensor and pose holding controller are connected via signal lines or wirelessly.

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