Dynamic calibration device for universal testing machine

Abstract

The utility model discloses a dynamic calibration device for a universal testing machine, which belongs to the technical field of calibration and stabilization of the universal testing machine and is characterized in that loading blocks are mounted on the side parts of two ends of a standard force sensor, stabilizer bars are inserted into holes of the loading blocks, and lateral deviation of the standard force sensor is limited by the stabilizer bars; a limiting groove is formed in the side wall of the stabilizing rod, a connecting frame is installed in a hole of the additionally-installed block, a limiting wheel is installed in the connecting frame, the limiting wheel is embedded into the limiting groove, and stable movement of the standard force sensor is achieved through the limiting wheel and the limiting groove. The design of the positioning device and the guide structure ensures the calibration accuracy, the standard force sensor accurately measures the force, and the calibration accuracy is improved. The universal testing machine rack and the combination thereof provide stable support, and vibration and interference errors are reduced. The guide structure is installed at the corner, space is saved, and layout is optimized. The rubber gasket reduces vibration and noise, and the stress application handle ensures safe and smooth operation. The device is stable in design, easy to check and convenient to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of calibration stability of universal testing machines, and particularly relates to a dynamic calibration device for a universal testing machine. Background Technique

[0002] The dynamic standard device of a universal testing machine, as the core tool for dynamic mechanical property testing, is designed to simulate the diverse dynamic load environments faced by materials in actual applications, thereby achieving accurate evaluation of the dynamic properties of materials. This device is not only a powerful assistant for scientific research and production, but also an important data source for engineers to deeply understand the dynamic performance of materials.

[0003] In terms of composition, the dynamic standard device of a universal testing machine integrates key components such as a standard force sensor and an advanced measurement and control system to jointly ensure the accuracy and reliability of testing. However, it is worth noting that in a complex and changeable measurement environment, the standard force sensor may be interfered by external factors such as vibration, temperature change, and installation error, thereby causing a lateral offset phenomenon.

[0004] The occurrence of lateral offset means that the measurement axis of the sensor no longer coincides with the line of action of the force ideally, which directly leads to a decrease in measurement accuracy. Specifically, the output signal of the sensor shows a non-linear relationship with the truly applied force value, making it difficult for the measurement result to accurately reflect the true dynamic performance of the material. In addition, lateral offset may also cause a decrease in the repeatability of the measurement result, as well as inconsistency in the output signal during the loading and unloading processes, that is, the hysteresis phenomenon, further exacerbating the measurement error. Content of the Utility Model

[0005] The main purpose of the utility model is to provide a dynamic calibration device for a universal testing machine, which can effectively solve the problems raised in the background technique.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A dynamic calibration device for a universal testing machine includes a universal testing machine frame, a positioning device, a guiding structure, a standard force sensor, a working piston, a display instrument, and a force application handle. The guiding structure is located at the upper corner of the universal testing machine frame. The positioning device and the standard force sensor are installed on the guiding structure. The universal testing machine frame is located on the working piston and faces the positioning device. The display instrument is located on the end face of the universal testing machine frame. The force application handle is located on the side end of the universal testing machine frame. The standard force sensor is located in the standard space between the guiding structures;

[0008] Mounting blocks are installed on both side parts at the two ends of the standard force sensor. A stabilizing rod is inserted into the hole of the mounting block to limit the lateral offset of the standard force sensor through the stabilizing rod;

[0009] A limiting groove is formed in the side wall of the stabilizing rod. A connecting frame is installed in the hole of the additional block, and a limiting wheel is installed in the frame of the connecting frame. The limiting wheel is embedded in the limiting groove, and the stable movement of the standard force sensor is realized through the limiting wheel and the limiting groove.

[0010] In a further preferred embodiment of the present application, a top frame is installed at the upper end of the guiding structure. The top frame is connected to the standard force sensor, and the top frame and the guiding structure are connected by nuts and anti-slip gaskets;

[0011] In a further preferred embodiment of the present application, the additional block and the standard force sensor are connected by bolts, and a rubber gasket is provided at the connection between the standard force sensor and the additional block. The edge of the additional block is designed to be arc-shaped;

[0012] In a further preferred embodiment of the present application, the contact end of the stabilizing rod and the additional block is designed to be smooth. The edge of the slot opening of the limiting groove is designed to be arc-shaped. The stabilizing rod is connected to the top frame and the positioning device;

[0013] In a further preferred embodiment of the present application, the connecting frame is installed in the opening of the additional block by bolts, and the limiting wheel is installed on the connecting frame through a rotating shaft;

[0014] In a further preferred embodiment of the present application, the two limiting grooves are symmetrically distributed on the stabilizing rod.

[0015] Compared with the prior art, the present utility model has the following beneficial effects:

[0016] In the present utility model, the design of the positioning device and the guiding structure ensures accurate positioning and guiding during the calibration process, enabling the standard force sensor to accurately measure the force value and improving the calibration accuracy. The universal testing machine frame serves as the basic support structure, and the combination of the additional block, the stabilizing rod, and the limiting wheel provides stable support for the standard force sensor and restricts lateral displacement, thereby reducing errors caused by vibration and external interference. The guiding structure is installed at the corner of the frame, which not only saves space but also optimizes the overall layout, making the calibration process smoother.

[0017] The rubber gasket between the additional block and the standard force sensor reduces vibration and noise, improving the stability of the calibration environment. The design of the force application handle ensures that the operator can apply the calibration force safely and smoothly without causing accidents due to improper operation.

[0018] The design of the device makes the connection of each component stable and easy to inspect, facilitating regular maintenance and troubleshooting. The integration and optimized layout of the entire device make the calibration process more efficient, reducing the time required for calibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is the overall structural schematic diagram of the present utility model;

[0020] Figure 2 This is the display diagram of the standard force sensor, additional block and stabilizing rod of the present utility model;

[0021] Figure 3 This is the front view of the standard force sensor, additional block and stabilizing rod of the present utility model;

[0022] Figure 4 is Figure 3 the enlarged schematic diagram at position A in

[0023] In the figure: 1. Universal testing machine frame; 2. Positioning device; 3. Guide structure; 4. Standard force sensor; 5. Top frame; 6. Working piston; 7. Display instrument; 8. Force application handle; 9. Additional block; 10. Stabilizing rod; 11. Limiting groove; 12. Limiting wheel; 13. Connecting frame. Specific embodiments

[0024] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] As Figure 1 - Figure 4 shown, a carefully designed dynamic calibration device for a universal testing machine integrates multiple key components to ensure an efficient and accurate calibration process. This device mainly consists of the following parts, each part is attached with a corresponding number for easy identification:

[0026] The universal testing machine frame 1 serves as the basic support structure of the entire calibration device, and it firmly carries the subsequent components. The positioning device 2 is precisely installed on the guide structure 3, and is responsible for providing an accurate positioning reference for the calibration process to ensure the accuracy and repeatability of the calibration. The guide structure 3 is cleverly designed at the corner of the universal testing machine frame 1, which not only optimizes the space layout but also ensures smooth guidance during the calibration process. This structure also carries the standard force sensor 4 and provides a stable support platform for it. The standard force sensor 4 is located within the standard space defined by the guide structure 3 and is the core measurement element during the calibration process. It accurately senses and converts the force signal to provide reliable data support for the calibration result. The top frame 5 is installed at the top of the guide structure 3 and is closely connected to the standard force sensor 4. The top frame 5 is firmly connected to the guide structure 3 through nuts and anti-slip gaskets, enhancing the overall stability.

[0027] The working piston 6 is arranged below the frame 1 of the universal testing machine and is directly docked with the frame, providing the necessary power support for the calibration process. The display instrument 7 is located at the end face of the frame 1 of the universal testing machine and is used to display various parameters in real time during the calibration process, facilitating the operator to monitor and record. The force application handle 8 is arranged at the side end of the frame 1 of the universal testing machine, and the operator controls the force application during the calibration process by operating the force application handle 8.

[0028] In addition, in order to further improve the stability and movement performance of the standard force sensor 4, adding blocks 9 are installed on both side parts at the two ends of the standard force sensor 4 and are connected by bolts. A rubber gasket is provided at the connection between the adding block 9 and the standard force sensor 4 to reduce vibration and noise. The edge of the adding block 9 is designed in an arc shape to facilitate contact with the stabilizing rod 10.

[0029] The stabilizing rod 10 is inserted into the hole of the adding block 9 and interacts with the limiting wheel 12 on the connecting frame 13 through the limiting groove 11 opened on its side wall. The limiting wheel 12 is embedded in the limiting groove 11, realizing the stable movement of the standard force sensor 4 and the limitation of lateral offset. The edge of the notch of the limiting groove 11 is also designed in an arc shape to reduce friction and wear.

[0030] The connecting frame 13 is installed in the opening hole of the adding block 9 by bolts, and the limiting wheel 12 is installed on the connecting frame 13 through a rotating shaft. This design enables the limiting wheel 12 to roll flexibly in the limiting groove 11, thus ensuring the smooth movement of the standard force sensor 4.

[0031] Two limiting grooves 11 are symmetrically distributed on the stabilizing rod 10, further enhancing its stability and reliability. The stabilizing rod 10 is also tightly connected to the top frame 5 and the positioning device 2 through corresponding connection methods, forming a solid overall structure. This dynamic calibration device of the universal testing machine realizes efficient, accurate and stable calibration functions through careful design and optimized layout.

[0032] Usage process: Place the frame 1 of the universal testing machine stably on a flat workbench to ensure that the frame is stable and does not shake. Precisely install the positioning device 2 on the guiding structure 3 to ensure the accuracy and reliability of the positioning device 2. Install the guiding structure 3 at the corner position of the frame 1 of the universal testing machine and adjust its position to ensure its stability and smoothness. Install the standard force sensor 4 in the standard space defined by the guiding structure 3 and ensure its stable connection. Install the top frame 5 on the top of the guiding structure 3 and ensure its firm connection with the guiding structure 3 through nuts and anti-slip gaskets. Arrange the working piston 6 below the frame 1 of the universal testing machine and directly dock it with the frame.

[0033] Connect the display instrument 7 correctly to the end face of the universal testing machine frame 1 and conduct preliminary debugging to ensure that various parameters can be displayed in real time. Install the force application handle 8 on the side end of the universal testing machine frame 1 and ensure its smooth operation without jamming. Install additional blocks 9 on both side parts of the two ends of the standard force sensor 4 and connect them by bolts to ensure that the additional blocks 9 are stable and in close contact with the standard force sensor 4. Insert the stabilizing rod 10 into the holes of the additional blocks 9 and ensure that the limiting wheels 12 are embedded in the limiting grooves 11 to achieve the limitation of stable movement and lateral offset.

[0034] The operator controls the up and down movement of the working piston 6 by operating the force application handle 8, thereby applying the required calibration force. While applying the force, the standard force sensor 4 senses and converts the force signal, and transmits the data to the display instrument 7 for real-time display. The operator can monitor various data during the calibration process according to the parameters on the display instrument 7, and record and analyze them.

[0035] During the calibration process, regularly check whether the connections of all components are stable, especially the connections of key parts such as the additional blocks 9 and the standard force sensor 4, and the stabilizing rod 10 and the limiting wheels 12. Pay attention to whether there are abnormal vibrations, noises or looseness. If any is found, it should be dealt with in time. Ensure that the operator operates in accordance with the safety operation procedures to avoid accidents.

[0036] After the calibration is completed, turn off all power sources and air sources, and return the force application handle 8 to its initial position. Clean the working area, put each component back in place and store it properly. Organize and analyze the calibration results as needed to provide a basis for subsequent tests or production.

[0037] The utility model improves the calibration accuracy through innovative positioning and guiding designs. The standard force sensor is placed in the best position to ensure accurate force value measurement. The frame combines additional blocks, stabilizing rods and limiting wheels to build a stable anti-offset environment and reduce errors. The guiding structure optimizes the space layout and the process is smooth. The rubber gaskets reduce vibration and noise and enhance stability. The force application handle is designed safely and conveniently to avoid potential safety hazards. The components are closely connected, which is convenient for maintenance and ensures the stable operation of the equipment. Overall, it improves the calibration accuracy and efficiency, shortens the cycle, and brings significant improvements.

[0038] The above is the preferred embodiment of the utility model and the technical principles applied. For those skilled in the art, any obvious changes such as equivalent transformations and simple substitutions based on the technical solution of the utility model without departing from the spirit and scope of the utility model shall fall within the protection scope of the utility model.

Claims

1. A dynamic calibration device for a universal testing machine, comprising a universal testing machine frame (1), a positioning device (2), a guiding structure (3), a standard force sensor (4), a working piston (6), a display instrument (7) and a force application handle (8). The guiding structure (3) is located at the upper corner of the universal testing machine frame (1). The positioning device (2) and the standard force sensor (4) are installed on the guiding structure (3). The universal testing machine frame (1) is located on the working piston (6) and is directly opposite to the positioning device (2). The display instrument (7) is located on the end face of the universal testing machine frame (1). The force application handle (8) is located at the side end of the universal testing machine frame (1). The standard force sensor (4) is located in the standard space between the guiding structures (3). It is characterized in that: Mounting blocks (9) are installed on both end sides of the standard force sensor (4). A stabilizing rod (10) is inserted into the holes of the mounting blocks (9), and the lateral displacement of the standard force sensor (4) is restricted by the stabilizing rod (10). A limiting groove (11) is formed in the side wall of the stabilizing rod (10). A connecting frame (13) is installed in the hole of the mounting block (9), and a limiting wheel (12) is installed inside the frame of the connecting frame (13). The limiting wheel (12) is embedded in the limiting groove (11), and the stable movement of the standard force sensor (4) is realized through the limiting wheel (12) and the limiting groove (11).

2. The dynamic calibration device of a universal testing machine according to claim 1, characterized in that: A top frame (5) is installed at the upper end of the guiding structure (3). The top frame (5) is connected to the standard force sensor (4), and the top frame (5) and the guiding structure (3) are connected by nuts and anti-slip gaskets.

3. The dynamic calibration device for a universal testing machine according to claim 2, wherein: The mounting block (9) is connected to the standard force sensor (4) by bolts, and a rubber gasket is provided at the connection between the standard force sensor (4) and the mounting block (9). The edge of the mounting block (9) is designed to be arc-shaped.

4. The dynamic calibration device of a universal testing machine according to claim 3, characterized in that: The contact end of the stabilizing rod (10) and the mounting block (9) is designed to be smooth. The edge of the notch of the limiting groove (11) is designed to be arc-shaped. The stabilizing rod (10) is connected to the top frame (5) and the positioning device (2).

5. The dynamic calibration device of a universal testing machine according to claim 4, wherein: The connecting frame (13) is installed in the opening of the mounting block (9) by bolts, and the limiting wheel (12) is installed on the connecting frame (13) through a rotating shaft.

6. The dynamic calibration device of a universal testing machine according to claim 5, characterized in that: The two limiting grooves (11) are symmetrically distributed on the stabilizing rod (10).

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