Self-adaptive force stabilizing device for characterizing mechanoluminescence cycle process

Abstract

The utility model discloses a self-adaptive force stabilizing device for characterizing a mechanoluminescence cycle process, and belongs to the technical field of material testing. According to the device, collaborative operation is achieved through a reciprocating testing mechanism and a force loading mechanism which are in linkage design; the reciprocating testing mechanism drives a lead screw transmission assembly through a servo motor to drive a single-axis moving platform, a pressure digital display and a material to achieve reciprocating friction in the y-axis direction; the force loading mechanism pulls a sliding platform to slide on a sliding rail through a spring, a round-bottom quartz tube is arranged at the end of the force loading mechanism and is in point contact with a sample of a pressure digital display accessory, and when the sample is slightly abraded to cause position change, the spring dynamically compensates pressure loss to ensure that force loading in the x-axis direction is constant. An optical fiber is integrated in the round-bottom quartz tube to synchronously collect mechanoluminescence signals. The device solves the problem of force attenuation in the existing cycle test, and is beneficial to systematic research on the cycle characteristics of the mechanoluminescent material.

Description

Technical Field

[0001] This utility model relates to the field of materials testing, and more specifically, to an adaptive force stabilization device for characterizing mechanoluminescence cycling processes. Background Technology

[0002] Mechanoluminescent materials have important application value in fields such as in-situ stress visualization, stress remote sensing, health care, structural monitoring, and security and anti-counterfeiting. However, assessing their cyclic stability requires continuous, in-situ mechanical stimulation.

[0003] However, existing mechanoluminescence cycle stability testing systems, using methods such as pelleting, PET film coating, and composite with PDMS to create flexible films, maintain a fixed position between the friction head and the sample. As the number of cycles increases, slight wear on the sample surface causes positional changes, leading to a sharp decrease in mechanical force and resulting in a spurious attenuation signal in the mechanoluminescence intensity. This severely affects the accuracy of the test results. In the PET film testing mode, film damage and powder escape reduce the effective luminescent volume; in the pelleting and PDMS composite film testing modes, uneven wear on the sample causes a sharp drop in pressure. Therefore, inventing an adaptive force stabilization device to characterize the mechanoluminescence cycle process and improve these problems has become a pressing issue for those skilled in the art. Utility Model Content

[0004] To overcome the above shortcomings, this invention provides an adaptive force stabilization device for characterizing the mechanoluminescence cycle process, aiming to improve the problem that the accumulation of wear on the sample surface in existing mechanoluminescence cycle tests can lead to a sudden decrease in mechanical force, affecting the test data.

[0005] This invention is achieved as follows: an adaptive force stabilizing device for characterizing the mechanoluminescence cyclic process, comprising...

[0006] A reciprocating testing mechanism, comprising a transmission assembly, with single-axis moving platforms vertically and alternately arranged above the transmission assembly, and a pressure digital display installed above the single-axis moving platforms;

[0007] A force loading mechanism includes a stabilizing force loading component and a sliding rail. A sliding plate is slidably mounted on the upper limit of the sliding rail. A round-bottomed quartz tube is mounted on the end of the sliding plate. The end of the round-bottomed quartz tube corresponds to the end of the pressure digital display. An optical fiber is disposed inside the round-bottomed quartz tube. The end of the optical fiber corresponds to the end of the pressure digital display.

[0008] In a preferred embodiment of this utility model, the end of the pressure digital display is provided with an accessory piece, which is correspondingly provided with the round-bottomed quartz tube.

[0009] In a preferred embodiment of this utility model, the transmission assembly includes a base plate, with limit plates vertically arranged at both ends of the base plate. A servo motor is arranged on the outside of one end of the base plate, and the servo motor is fixedly installed on the outside of the limit plate. A lead screw is driven to the end of the servo motor, and a transmission table is driven on the lead screw.

[0010] In a preferred embodiment of this utility model, the output end of the servo motor is limited to rotate through the limiting plate, and the two ends of the lead screw are respectively limited to rotate and connected to limiting blocks, which are respectively disposed on the inner side of the limiting plate.

[0011] In a preferred embodiment of this utility model, sliders are fixedly connected to both sides of the transmission table, and slide rails are fixedly connected to both sides of the base plate. The sliders are limited and slidably engaged with the slide rails.

[0012] In a preferred embodiment of this utility model, the single-axis moving platform is fixedly installed on the upper surface of the transmission table, and an mounting plate is fixedly installed on the upper output surface of the single-axis moving platform, and the pressure digital display is fixedly installed on the mounting plate.

[0013] In a preferred embodiment of this utility model, the stabilizing force loading component further includes a first optical support rod, which is fixedly installed at the bottom of both ends of the sliding track. Limiting sliders are fixedly connected to the bottom of both ends of the sliding plate, and the limiting sliders are slidably connected to the sliding track.

[0014] In a preferred embodiment of this utility model, the sliding track is I-shaped, and the middle of the limiting slider has a groove that cooperates with the sliding track.

[0015] In a preferred embodiment of this utility model, a support base is fixedly installed on the upper surface of the sliding plate near the end of the pressure digital display, and the round-bottomed quartz tube is limited and installed in the middle of the support base.

[0016] In a preferred embodiment of this utility model, the sliding plate is provided with a plurality of mounting holes on both sides of the end away from the pressure digital display. The mounting holes are used to install limit bolts. The bottom of each limit bolt is connected to a spring. The other end of each spring is fixedly connected to a second optical support rod. The second optical support rod is provided on both sides of the end of the sliding track close to the pressure digital display.

[0017] The beneficial effects of this utility model are as follows: The adaptive force stabilization device for characterizing the mechanoluminescence cycle process obtained by the above design maintains stable pressure during use: Through the dynamic balance design of the spring and the sliding platform (sliding plate, limiting slider, etc.), when the sample wear causes a small displacement, the spring automatically adjusts the position of the sliding plate. Based on Hooke's law (ΔF=kΔx), the small displacement of the slider caused by scratches is almost negligible relative to the overall deformation of the spring, ensuring that the force applied to the sample remains stable, effectively eliminating spurious attenuation signals, and improving test accuracy.

[0018] Structural integration and flexibility: The reciprocating testing mechanism (including servo motors, lead screws, etc.) and the force loading mechanism (including sliding rails, sliding platforms, springs, round-bottomed quartz tubes, etc.) are arranged in a vertically staggered manner, realizing the coordinated operation of force loading in the x-axis direction and reciprocating friction in the y-axis direction. The cooperation between the slide rail and the slider in the transmission assembly, and the groove engagement between the I-shaped sliding rail and the limiting slider in the stabilizing force loading assembly, ensure the smoothness of the movement and the accuracy of the limiting.

[0019] Cost and operational advantages: Core components such as sliding rails, springs, and pressure digital displays use standard parts, reducing manufacturing costs; modular design facilitates assembly and maintenance, and the single-axis moving platform allows for flexible setting of target stress (0.3-30N), while the lead screw slide can adjust the stroke (e.g., 10mm) and cycle count (e.g., 100 times) to adapt to different testing needs.

[0020] Synchronous detection capability: The round-bottomed quartz tube integrates optical fiber, which can collect mechanoluminescence spectrum in real time and record data synchronously with mechanical stimulation, thereby improving the system's synergy and data reliability. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of one side of the structure provided by an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of another side of the structure provided for an embodiment of the present utility model;

[0024] Figure 3 A schematic diagram of the reciprocating testing mechanism provided for an embodiment of this utility model;

[0025] Figure 4A schematic diagram of the force loading mechanism provided for an embodiment of this utility model;

[0026] Figure 5 A schematic diagram of the stabilizing force loading component provided for an embodiment of this utility model.

[0027] In the diagram: 100-Reciprocating testing mechanism; 110-Pressure digital display; 111-Accessory piece; 120-Transmission assembly; 121-Base plate; 122-Limiting plate; 123-Servo motor; 124-Lead screw; 125-Limiting block; 126-Slide rail; 127-Slider; 128-Transmission table; 129-Mounting plate; 130-Single-axis moving platform; 200-Force loading mechanism; 210-Stabilizing force loading assembly; 211-Sliding rail; 212-First optical support rod; 213-Sliding plate; 214-Limiting slider; 215-Support base; 216-Round bottom quartz tube; 217-Spring; 218-Limiting bolt; 219-Second optical support rod; 220-Fiber optic cable. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] Please see Figure 1 and Figure 2 This utility model provides a technical solution: an adaptive force stabilization device for characterizing the mechanoluminescence cycle process, comprising...

[0030] The reciprocating testing mechanism 100 includes a transmission component 120, with a single-axis moving platform 130 vertically and alternately arranged above the transmission component 120, and a pressure digital display 110 mounted above the single-axis moving platform 130. The force loading mechanism 200 includes a stabilizing force loading component 210, which includes a sliding rail 211. A sliding plate 213 is slidably mounted above the sliding rail 211, and a round-bottomed quartz tube 216 is mounted at the end of the sliding plate 213. The end of the round-bottomed quartz tube 216 corresponds to the end of the pressure digital display 110. An optical fiber 220 is installed inside the round-bottomed quartz tube 216, with the end of the optical fiber 220 corresponding to the end of the pressure digital display 110. The reciprocating testing mechanism 100 and the force loading mechanism 200 are arranged vertically and alternately, realizing the coordinated operation of force loading in the x-axis direction and reciprocating friction in the y-axis direction.

[0031] Please see Figure 3 and Figure 4 The pressure digital display 110 has an accessory piece 111 at its end, which corresponds to the round-bottomed quartz tube 216. The transmission assembly 120 includes a base plate 121, with limit plates 122 vertically arranged at both ends of the base plate 121. A servo motor 123 is mounted on the outside of one end of the base plate 121 and is fixedly installed on the outside of the limit plate 122. A lead screw 124 is connected to the end of the servo motor 123, and a transmission platform 128 is mounted on the lead screw 124. The transmission platform 128 and the lead screw 124 are connected by a lead screw nut. The servo motor 123 is controlled to drive the transmission platform 128 to move back and forth.

[0032] The output end of the servo motor 123 is limited to rotate through the limiting plate 122, and the two ends of the lead screw 124 are respectively limited to rotate and connected to the limiting blocks 125. The limiting blocks 125 are respectively set on the inner side of the limiting plate 122.

[0033] Slider 127s are fixedly connected to both sides of the transmission table 128, and slide rails 126s are fixedly connected to both sides of the base plate 121. The slider 127s are limited and slidably engaged with the slide rails 126s. A single-axis moving platform 130 is fixedly installed on the upper surface of the transmission table 128. A mounting plate 129 is fixedly installed on the upper output surface of the single-axis moving platform 130. A pressure digital display 110 is fixedly installed on the mounting plate 129. The single-axis moving platform 130 is used to drive the mounting plate 129 to move vertically along the transmission table 128, and is used to adjust the pressure of the pressure digital display 110.

[0034] The reciprocating testing mechanism 100 (including servo motor 123, lead screw 124, etc.) and the force loading mechanism 200 (including sliding rail 211, round-bottomed quartz tube 216, etc.) are arranged in a vertically staggered manner, realizing the coordinated operation of force loading in the x-axis direction and reciprocating friction in the y-axis direction. The cooperation between the slide rail 126 and the slider 127 in the transmission assembly 120, and the groove engagement between the I-shaped sliding rail 211 and the limiting slider 214 in the stabilizing force loading assembly 210, ensure the smoothness of the movement and the accuracy of the limiting.

[0035] Please see Figure 4 and Figure 5 The stabilizing force loading component 210 also includes a first optical support rod 212, which is fixedly installed at the bottom of both ends of the sliding track 211. Limiting sliders 214 are fixedly connected to the bottom of both ends of the sliding plate 213, and the limiting sliders 214 are slidably connected to the sliding track 211. The sliding track 211 is I-shaped, and the limiting slider 214 has a groove in the middle that mates with the sliding track 211.

[0036] A support base 215 is fixedly installed on the upper surface of the sliding plate 213 near the pressure digital display 110, and a round-bottomed quartz tube 216 is limited and installed in the middle of the support base 215. Limiting bolts 218 are threadedly connected to both sides of the end of the sliding plate 213 away from the pressure digital display 110. Springs 217 are connected to the bottom of the limiting bolts 218, and second optical support rods 219 are fixedly connected to the other ends of the springs 217. The second optical support rods 219 are set on both sides of the end of the sliding track 211 near the pressure digital display 110. The springs 217 are used to maintain a continuous pushing force on the sample during detection, so as to cooperate with the pressure digital display 110 and the single-axis moving platform 130 to keep the pressure constant.

[0037] Preparation before sample installation

[0038] Ensure that the single-axis moving platform 130 is in the initial position (away from the direction of the round bottom quartz tube 216), the pressure digital display 110 is not under force, and the spring 217 is in the natural extension or pre-tightened state (adjust the spring position according to the test requirements, select the screw fixing hole position through the multi-hole design on the side of the sliding plate 213, and match springs with different wire diameters / lengths).

[0039] Check whether the round-bottom quartz tube 216 is correctly installed on the sliding plate 213 via the optical axis fixing support (support 215), and whether the optical fiber 220 has been inserted into the round-bottom quartz tube 216 and placed corresponding to the sample. The other end of the optical fiber is connected to the spectrometer via a coupler.

[0040] Sample pretreatment

[0041] If the sample is a bulk material (such as a disc-shaped sample prepared by the tableting method), the surface must be cleaned to ensure that there are no impurities, so as to avoid affecting the frictional contact and the light emission signal. If the sample is a thin film (such as a flexible film made of powder sample and PDMS composite), the contact surface must be flat and stable. All the above samples must be flatly pasted on the metal accessory (accessory piece 111) of the pressure digital display 110 to ensure that the sample and the metal accessory are tightly connected.

[0042] Operating Procedure: Force Loading in the X-axis Direction: Operate the single-axis moving platform 130 (mounted on the transmission table 128), which, via the mounting plate 129, drives the pressure digital display 110 to move towards the round-bottom quartz tube 216. The accessory piece 111 of the pressure digital display 110 pushes the sample to form point contact with the end of the round-bottom quartz tube 216. Continuously move the single-axis moving platform 130 until the pressure digital display 110 shows that the target stress value (e.g., 0.3-30N) has been reached.

[0043] Spring preload and dynamic balance: The sliding plate 213 is slidably mounted on the I-shaped sliding track 211 by a limiting slider 214. One end of the sliding plate 213, away from the pressure digital display 110, is connected to the spring 217 by a limiting bolt 218. The other end of the spring 217 is fixed to the second optical support rod 219. When the sample is pushed towards the round-bottomed quartz tube 216, the sliding plate 213 is pushed and stretches the spring 217 until the spring tension and the applied mechanical force are balanced. At this point, the system is in an initial dynamic equilibrium state, ensuring that the initial stress is constant.

[0044] Reciprocating friction and force compensation process

[0045] Reciprocating motion in the y-axis direction: Servo motor 123 drives lead screw 124 to rotate, which in turn drives transmission table 128 to perform periodic reciprocating motion along slide rail 126 in the y-axis direction (stroke and speed can be adjusted by servo motor parameters, such as stroke 10mm, cycle 100 times). Transmission table 128 drives the sample to move synchronously through single-axis moving platform 130 and mounting plate 129, so that the sample surface forms stable sliding friction with the end face of round bottom quartz tube 216.

[0046] Wear Compensation and Stable Pressure Maintenance: As the number of friction cycles increases, the wear on the sample surface causes a slight displacement at its contact point with the round-bottomed quartz tube 216 (i.e., a reduction in sample thickness). In traditional fixed-position devices, this displacement would result in a sudden decrease in force. However, in this device, the spring 217 has elastic deformation capability. When the sample is slightly worn, the spring 217 elastically contracts and pulls the sliding plate 213 along the sliding track 211 a small distance (Δx) towards the sample. Based on Hooke's Law (ΔF=k×Δx), the reduction in displacement of the sliding platform (Δx) during this process is extremely small relative to the overall deformation of the spring, and the force fluctuation is negligible, thus effectively avoiding the generation of spurious attenuation signals.

[0047] Synchronous spectral acquisition: The optical fiber 220 is fixed inside the round-bottomed quartz tube 216 to collect mechanoluminescence spectral data in real time during the friction process. The correlation between luminescence intensity and mechanical stimulation is recorded and analyzed synchronously by a spectrometer to ensure the accuracy and timeliness of the data.

[0048] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An adaptive stress stabilisation device for characterising a mechanoluminescent cycle, characterised in that, include A reciprocating testing mechanism, comprising a transmission assembly, with single-axis moving platforms vertically and alternately arranged above the transmission assembly, and a pressure digital display installed above the single-axis moving platforms; A force loading mechanism includes a stabilizing force loading component and a sliding rail. A sliding plate is slidably mounted on the upper limit of the sliding rail. A round-bottomed quartz tube is mounted on the end of the sliding plate. The end of the round-bottomed quartz tube corresponds to the end of the pressure digital display. An optical fiber is disposed inside the round-bottomed quartz tube. The end of the optical fiber corresponds to the end of the pressure digital display.

2. An adaptive stress stabilisation apparatus for characterising a mechanoluminescent cycle according to claim 1, wherein: The pressure digital display is provided with an accessory piece at its end, and the accessory piece is provided in correspondence with the round-bottomed quartz tube.

3. An adaptive stress stabilizing device for characterizing a mechanoluminescence cycle process as claimed in claim 1, wherein: The transmission assembly includes a base plate, with limit plates vertically arranged at both ends of the base plate. A servo motor is arranged on the outside of one end of the base plate and is fixedly installed on the outside of the limit plate. A lead screw is driven to the end of the servo motor, and a transmission table is driven on the lead screw.

4. An adaptive stress stabilisation apparatus for characterising a mechanoluminescent cycle according to claim 3, wherein: The output end of the servo motor is limited to rotate through the limiting plate, and the two ends of the lead screw are respectively limited to rotate and connected to limiting blocks, which are respectively arranged on the inner side of the limiting plate.

5. An adaptive stress stabilizing device for characterizing a mechanoluminescence cycle process as claimed in claim 3, wherein: The transmission platform is fixedly connected to sliders on both sides, and the base plate is fixedly connected to slide rails on both sides. The sliders are limited and slidably engaged with the slide rails.

6. An adaptive stress stabilizing device for characterizing a mechanoluminescence cycle process as claimed in claim 3, wherein: The single-axis moving platform is fixedly installed on the upper surface of the transmission table, and a mounting plate is fixedly installed on the upper output surface of the single-axis moving platform. The pressure digital display is fixedly installed on the mounting plate.

7. The adaptive force stabilizing device for characterizing a mechanoluminescence cyclic process as described in claim 6, characterized in that: The stabilizing force loading component also includes a first optical support rod, which is fixedly installed at the bottom of both ends of the sliding track. Limiting sliders are fixedly connected to the bottom of both ends of the sliding plate, and the limiting sliders are slidably connected to the sliding track.

8. An adaptive stress stabilisation apparatus for characterising a mechanoluminescent cycle according to claim 7, wherein: The sliding track is I-shaped, and the middle of the limiting slider has a groove that matches the sliding track.

9. An adaptive stress stabilizing device for characterizing a mechanoluminescent cycle according to claim 7, wherein: A support base is fixedly installed on one end of the upper surface of the sliding plate near the pressure digital display, and the round-bottomed quartz tube is limited and installed in the middle of the support base.

10. An adaptive stress stabilizing device for characterizing a mechanoluminescent cycle according to claim 7, wherein: The sliding plate has multiple mounting holes on both sides of the end away from the pressure digital display. The mounting holes are used to install limit bolts. The bottom of each limit bolt is connected to a spring. The other end of each spring is fixedly connected to a second optical support rod. The second optical support rod is located on both sides of the sliding track near the pressure digital display. The limit bolts in the multiple mounting holes provide multiple gear selections for the spring to provide different magnitudes of force.

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