Stacked force standard machine pull to measure and verify force sensor pull-off protection device
By designing a superimposed force standard machine pull-to-the-meter force sensor pull-off protection device, and using elastic elements to push the slider to buffer the impact of the reaction frame, the problem of high-energy impact when the force sensor breaks is solved, protecting key components, extending equipment life and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA AIRPLANT STRENGTH RES INST
- Filing Date
- 2026-04-03
- Publication Date
- 2026-05-29
AI Technical Summary
Large-tonnage force sensors are prone to breakage during measurement and calibration, resulting in high-energy impact phenomena that damage the main structure of the superimposed force standard machine and its key components such as the standard force sensor.
Design a superimposed force standard machine pull-out measurement force sensor pull-out protection device, including mounting plate, bracket, slider, connecting rod and elastic element. The elastic force of the elastic element pushes the slider outward to buffer the impact energy of the reaction frame falling back and protect the key components.
It effectively protects the main structure of the superimposed force standard machine and its standard force sensor, avoids damage, extends the service life of the equipment, reduces replacement costs, and does not affect the measurement accuracy and equipment operation.
Smart Images
Figure CN122108441A_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the technical field of design technology of force sensor for tensile measurement and verification of superimposed force standard machine, specifically relating to a tensile breakage protection device for force sensor for tensile measurement and verification of superimposed force standard machine. Background Technology
[0002] A force sensor is a sensor used to measure force. It can convert force signals into electrical signals to measure force values. It has advantages such as high precision, good stability, and high reliability, and is widely used in aerospace, industrial automation, intelligent manufacturing and other fields.
[0003] In aircraft structural strength testing, a large number of force sensors are required to obtain comprehensive test data. To ensure the accuracy of the force sensor readings, the force sensors need to be calibrated using a force standard machine for initial, periodic, and post-maintenance calibration.
[0004] Currently, the most commonly used force standard machines include static weight type, lever type, and superimposed type force standard machines. Among them, the superimposed type force standard machine is a metrological standard device that uses hydraulic power as the loading method and high-precision standard force sensor as the traceability standard. It has the characteristics of high precision, high verification efficiency, and large measurement range, and is often used for the metrological verification of large-tonnage force sensors.
[0005] Due to limitations in the manufacturing process of large-tonnage force sensors, they may break within their range during tensile measurement and calibration. When a force sensor breaks, a high-energy impact occurs, which can easily damage the main structure of the superimposed force standard machine and its key components such as the standard force sensor.
[0006] This application is made in view of the aforementioned technical deficiencies. Summary of the Invention
[0007] The purpose of this application is to provide a pull-off protection device for the force sensor of a superimposed force standard machine for measurement and verification. This device is used to protect the main structure of the superimposed force standard machine and its key components such as the standard force sensor when the force sensor is pulled off, thereby avoiding the impact of high-energy impacts on the equipment, extending the service life of the equipment, enabling the force standard machine to be used repeatedly for a long time, and reducing the cost of replacing the equipment.
[0008] The technical solution of this application is:
[0009] A superimposed force standard machine pull-out measurement force sensor pull-out protection device includes a mounting plate, a bracket, a slider, and a connecting rod;
[0010] The mounting plate is set horizontally, and the vertical bracket is connected above the mounting plate;
[0011] The bracket includes vertical beams and horizontal beams. There are two vertical beams, with their bases connected to the top of the mounting plate. The horizontal beams are connected to the tops of the two vertical beams.
[0012] There are two sliders, which are set in horizontal sliding holes opened in the side walls of the two vertical beams;
[0013] There are two connecting rods, which are set on the outside of the two vertical beams. One end is hinged to the slider, and the other end is hinged to the crossbeam. The other end is bent inward and has a downward impact protrusion.
[0014] Two impact protrusions extend into the underside of the beam through strip-shaped holes opened on the side wall of the beam.
[0015] According to at least one embodiment of this application, in the above-mentioned superimposed force standard machine pull-to-measurement force sensor pull-off protection device, the roots of the two vertical beams are welded to the top of the mounting plate.
[0016] The crossbeam is integrally formed at the top of the two vertical beams;
[0017] The slider is strip-shaped and lies on the same plane as the crossbeam;
[0018] Limiting pins are installed in the two horizontal sliding holes, and the limiting pins pass through the guide holes opened on the side wall of the slider.
[0019] According to at least one embodiment of this application, in the above-mentioned superimposed force standard machine pull-to-measurement force sensor pull-off protection device, the two connecting rods are connected to the slider and the crossbeam through a single and double ear structure and are hinged by a pin.
[0020] According to at least one embodiment of this application, in the above-mentioned superimposed force standard machine pull-to-measurement force sensor pull-off protection device, the two impact protrusions are arc-shaped below.
[0021] According to at least one embodiment of this application, the above-mentioned superimposed force standard machine pull-to-measurement force sensor pull-off protection device further includes an elastic element;
[0022] There are two elastic elements, connected between two connecting rods and a vertical beam. They rely on elastic force to pull the two sliders outward.
[0023] According to at least one embodiment of this application, when the above-mentioned superimposed force standard machine pull-to-measurement force sensor breakage protection device is applied, the mounting plate is connected between the hydraulic cylinder and the standard force sensor of the superimposed force standard machine, the two vertical beams are located on both sides of the top of the reaction frame of the superimposed force standard machine, the horizontal beam is located above the top of the reaction frame, the two impact protrusions do not contact the top of the reaction frame, and the two sliders are located horizontally below the top of the reaction frame.
[0024] This application has at least the following beneficial technical effects:
[0025] This invention provides a protection device for the breakage of the force sensor in the tensile measurement verification of a superimposed force standard machine. The device has a simple structure, operates independently of the superimposed force standard machine, and has no impact on the normal operation and measurement accuracy of the superimposed force standard machine. It is versatile, convenient, easy to inspect and maintain, highly practical, and has a fast response speed. It provides significant protection for the main structure of the superimposed force standard machine and its key components such as the standard force sensor. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the structure of the superimposed force standard machine pull-out measurement force sensor breakage protection device provided in the embodiments of this application;
[0027] Figure 2 This is a schematic diagram illustrating the application of the superimposed force standard machine tension measurement force sensor breakage protection device provided in the embodiments of this application;
[0028] Figure 3 yes Figure 2 A partial schematic diagram;
[0029] Figure 4 yes Figure 3 Side view of part of the structure;
[0030] Figure 5 yes Figure 4 Top view;
[0031] in:
[0032] 1-Mounting plate; 2-Bracket; 3-Slider; 4-Connecting rod; 5-Elastic element.
[0033] To better illustrate this embodiment, some content in the accompanying drawings may be omitted, enlarged, or reduced. They are for illustrative purposes only and should not be construed as limiting the scope of this application. Detailed Implementation
[0034] To make the technical solution and advantages of this application clearer, the technical solution of this application will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of this application, and are only used to explain this application, not to limit this application. It should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings, and other related parts can be referred to the general design.
[0035] Furthermore, unless otherwise defined, the technical or scientific terms used in this application description shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The word "comprising" as used in this application description indicates that the concept preceding the word encompasses the concepts listed following the word and their equivalents, without excluding other related concepts.
[0036] Furthermore, the terms indicating location used in the description of this application are only used to indicate relative directions or positional relationships. When the absolute position of the described object changes, its relative positional relationship may also change accordingly. It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation" and "connection" used in the description of this application should be interpreted broadly. For example, a connection can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand its specific meaning in this application according to the specific circumstances.
[0037] A superimposed force standard machine tension measurement force sensor breakage protection device, such as Figure 1 As shown, it includes mounting plate 1, bracket 2, slider 3, connecting rod 4, and elastic element 5.
[0038] Mounting plate 1 is set horizontally, and vertical bracket 2 is connected above mounting plate 1.
[0039] The bracket 2 is in the shape of a door and includes vertical beams and horizontal beams. There are two vertical beams, the base of which is connected to the top of the mounting plate 1, and can be welded to the top of the mounting plate 1. The horizontal beam is connected to the top of the two vertical beams, and can be integrally formed on the top of the two vertical beams.
[0040] The slider 3 is strip-shaped, there are two of them, and they are set in the horizontal sliding holes opened in the side walls of the two vertical beams, and are on the same plane as the crossbeam.
[0041] Limiting pins are installed in the two horizontal sliding holes, and the limiting pins pass through the guide holes opened on the side wall of the slider 3.
[0042] There are two connecting rods 4, which are set on the outside of the two vertical beams. One end is hinged to the slider 3, and the other end is hinged to the crossbeam. The other end is bent inward and has a downward impact protrusion.
[0043] The two connecting rods 4 are connected to the slider 3 and the crossbeam through a single and double lug structure and are hinged by a pin.
[0044] The two impact protrusions are arc-shaped at the bottom and extend into the bottom of the beam through strip-shaped holes opened on the side wall of the beam.
[0045] The elastic element 5 is a spring, there are two of them, connected between the two connecting rods 4 and the vertical beam. Relying on the elastic force, the two sliders 3 are pulled outward.
[0046] In practical applications, the aforementioned superimposed force standard machine's pull-to-measurement force sensor breakage protection device can be installed by connecting the mounting plate 1 between the hydraulic cylinder and the standard force sensor of the superimposed force standard machine. The two vertical beams are positioned on either side of the top of the reaction frame of the superimposed force standard machine, and the horizontal beam is positioned above the top of the reaction frame. The two impact protrusions do not contact the top of the reaction frame, and the two sliders 3 are horizontally positioned below the top of the reaction frame. Figures 2-5 As shown.
[0047] When performing tensile measurement verification on the force sensor, the force sensor is set between the bottom end of the reaction frame and the base. The hydraulic cylinder is activated to lift the breakage protection device, the standard force sensor, and the reaction frame upwards, thereby applying a tensile load to the force sensor through the bottom end of the reaction frame and the base to perform tensile measurement verification.
[0048] After the force sensor breaks, the reaction frame will surge upwards. After the top of the reaction frame hits the crossbeam, it will fall back. During this process, the top of the reaction frame will hit two impact protrusions, which will drive the two connecting rods 4 to overcome the elastic force of the elastic element 5 and push the two sliders 3 inwards. This will support the top of the reaction frame when it falls back, effectively releasing the impact energy of the falling reaction frame. This will prevent the top of the reaction frame from falling directly onto the standard force sensor, reducing the risk of damage to the main structure of the superimposed force standard machine and its key components such as the standard force sensor.
[0049] The elastic effect of the elastic element 5 can be designed in detail to prevent the two sliders 3 from being pulled outwards before the top of the reaction frame falls back to the horizontal position of the two sliders 3 after the force sensor breaks. This would result in the loss of the buffering effect on the impact energy of the falling reaction frame.
[0050] The aforementioned protection device for the pull-off protection of the force sensor in the superimposed force standard machine is simple in structure, operates independently of the superimposed force standard machine, and has no impact on the normal operation and measurement accuracy of the superimposed force standard machine. It is versatile and convenient, easy to inspect and maintain, highly practical, and has a fast response speed. It has a significant protection effect on the main structure of the superimposed force standard machine and its key components such as the standard force sensor, and has achieved good results in practice.
[0051] The technical solution of this application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.
Claims
1. A superimposed force standard machine for tensile strength measurement and verification force sensor breakage protection device, characterized in that, Includes mounting plate (1), bracket (2), slider (3), and connecting rod (4); The mounting plate (1) is set horizontally, and the vertical bracket (2) is connected above the mounting plate (1); The bracket (2) includes vertical beams and horizontal beams. There are two vertical beams, with their roots connected to the top of the mounting plate (1). The horizontal beams are connected to the tops of the two vertical beams. There are two sliders (3), which are set in the horizontal sliding holes opened on the side walls of the two vertical beams; There are two connecting rods (4), which are set on the outside of the two vertical beams. One end is hinged to the slider (3), and the other end is hinged to the crossbeam. The end is bent inward and has a downward impact protrusion. Two impact protrusions extend into the underside of the beam through strip-shaped holes opened on the side wall of the beam.
2. The superimposed force standard machine tension measurement and verification force sensor breakage protection device according to claim 1, characterized in that, The roots of the two vertical beams are welded to the top of the mounting plate (1); The crossbeam is integrally formed at the top of the two vertical beams; The slider (3) is strip-shaped and lies on the same plane as the crossbeam; Limiting pins are set in the two horizontal sliding holes, and the limiting pins pass through the guide holes opened on the side wall of the slider (3).
3. The superimposed force standard machine tension measurement and verification force sensor breakage protection device according to claim 2, characterized in that, The two connecting rods (4) are connected to the slider (3) and the crossbeam through a single and double ear structure and are hinged by a pin.
4. The superimposed force standard machine tension measurement and verification force sensor breakage protection device according to claim 3, characterized in that, The two impact protrusions are curved at the bottom.
5. The superimposed force standard machine tension measurement and verification force sensor breakage protection device according to claim 4, characterized in that, It also includes elastic elements (5); There are two elastic elements (5), which are connected between the two connecting rods (4) and the vertical beam. They rely on elastic force to pull the two sliders (3) outward.
6. The superimposed force standard machine tensile force sensor breakage protection device according to claim 5, characterized in that, When in use, the mounting plate (1) is connected between the hydraulic cylinder and the standard force sensor of the superimposed force standard machine. The two vertical beams are located on both sides of the top of the reaction frame of the superimposed force standard machine, the horizontal beam is located above the top of the reaction frame, the two impact protrusions do not contact the top of the reaction frame, and the two sliders (3) are located below the top of the reaction frame in the horizontal direction.