Biomass vascular bundle pull-out experimental apparatus
By using a snap-fit fixture and an environmental conditioning module in the biomass vascular bundle pull-out test device, the problem of slippage and damage of bamboo samples during testing was solved, thus achieving accuracy and reliability of test results. This device is suitable for microscale pull-out testing and interface strength characterization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- INT CENT FOR BAMBOO & RATTAN
- Filing Date
- 2025-06-23
- Publication Date
- 2026-06-30
AI Technical Summary
In existing technologies, the accuracy and reliability of interface test results for biomass materials are difficult to guarantee. In particular, small bamboo samples are prone to slippage or damage during clamping, which affects the accuracy and reliability of test results.
A biomass vascular bundle pull-out experimental device was designed, which uses snap-fit clamps instead of traditional interlocking clamps. Combined with an environmental control module and a sensor system, the environmental parameters inside the experimental chamber are adjusted in real time to ensure the stability and accuracy of the test environment.
It effectively reduces sample slippage and vascular bundle damage, improves the accuracy and reliability of test results, and is suitable for microscale pull-out testing and interfacial strength characterization of biomass materials, with good potential for widespread application.
Smart Images
Figure CN224435937U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of biomass material performance testing devices, and in particular to a biomass vascular bundle pull-out test device. Background Technology
[0002] The high-value development of biomass materials aligns with the trend of environmental protection and low carbon, and the application of natural composite materials in engineering and green building is constantly expanding. Bamboo, as a renewable natural composite material with excellent mechanical properties, has attracted much attention due to its unique vascular bundle-thin-wall structure, in which the interfacial bonding performance plays a decisive role in the overall mechanical behavior.
[0003] Current common interface testing methods, such as fiber pull-out and interface shearing, are mostly used for resin or inorganic-based composite materials, which have poor adaptability to the environmental sensitivity of natural materials. In addition, during the testing process, the two ends of the sample are often clamped with interlocking clamps, which are generally difficult to stably clamp or fix the small bamboo sample, which can easily lead to sample slippage or damage, affecting the accuracy and reliability of the test results.
[0004] Therefore, ensuring the accuracy and reliability of test results has become an important issue that urgently needs to be addressed. Utility Model Content
[0005] This invention provides a biomass vascular bundle pull-out test device to address the shortcomings of existing technologies in ensuring the accuracy and reliability of test results. It can effectively reduce sample slippage and damage to the vascular bundle, while simultaneously adjusting the environmental parameters inside the test chamber in real time during the test to maintain a constant test environment and improve the accuracy and reliability of the test results.
[0006] This utility model provides a biomass vascular bundle pull-out experimental device, comprising:
[0007] Experimental box;
[0008] An environmental control module is used to adjust the environmental parameters inside the experimental chamber.
[0009] A pull-out module, disposed inside the experimental chamber, includes a first pull body and a second pull body that are arranged opposite to each other and can move closer or further apart;
[0010] The first tensioning body is suitable for clamping one end of the sample;
[0011] The second pull body is provided with a slot, which has a relatively small opening on the side of the second pull body facing the first pull body, and the opening extends through one side of the second pull body to form a notch. The slot is suitable for engaging the other end of the sample.
[0012] According to the present invention, one of the first pulling body and the second pulling body is fixedly connected to the experimental box, and the other is connected to the experimental box through a linear drive component.
[0013] According to the biomass vascular bundle pull-out experimental device provided by this utility model, it further includes:
[0014] Sensors are suitable for collecting and feeding back environmental parameter information within the experimental chamber;
[0015] The numerical control system is connected to the sensor and the environmental control module, and is adapted to receive the environmental parameter information and control the environmental control module based on the environmental parameter information and the set parameter range, so that the environmental parameters in the experimental chamber are maintained within the set range.
[0016] According to the biomass vascular bundle pull-out experimental device provided by this utility model, the environmental control module includes:
[0017] A humidification unit for adjusting the humidity inside the experimental chamber; and / or,
[0018] Heating unit used to regulate the temperature inside the experimental chamber.
[0019] According to the biomass vascular bundle pull-out experimental device provided by this utility model, the humidification unit includes:
[0020] Steam generator, suitable for producing steam;
[0021] The gas delivery pipe is connected at one end to the steam generator and at the other end to the experimental chamber.
[0022] According to the present invention, a biomass vascular bundle pulling test device is provided, wherein the heating unit includes:
[0023] Several heating elements are installed inside the experimental chamber, and the heating elements are arranged around the pulling module.
[0024] According to the present invention, a biomass vascular bundle pulling experimental device is provided, wherein the environmental control module further includes a circulating fan connected to the experimental chamber.
[0025] According to the present invention, a biomass vascular bundle pull-out experimental device is provided, wherein the bottom of the experimental box is connected to a drain outlet.
[0026] The biomass vascular bundle pulling experimental device provided by this utility model also includes an in-situ camera module for recording the experimental process.
[0027] According to the present invention, a biomass vascular bundle pull-out experimental device is provided, wherein the in-situ imaging module includes:
[0028] A microscope camera with its lens facing the test area between the first and second pull bodies;
[0029] An adjustable bracket is used to support the microscope camera and adjust the relative position of the microscope camera and the test area.
[0030] The biomass vascular bundle pull-out test device provided by this utility model involves laser-cut pre-prepared biomass samples, such as bamboo samples, and vascular bundle peeling under a stereomicroscope. The prepared sample is T-shaped. The sample is then loaded onto the pull-out module, with the T-shaped end of the sample inserted into a slot through a notch on the side of the second pull body. The other end of the sample protrudes through the slot and is clamped by the first pull body, causing the first and second pull bodies to move away from each other. The sample is then subjected to a pull-out test. Compared to traditional interlocking clamps, the second pull body uses a snap-fit method to position the sample, effectively reducing sample slippage and damage to the vascular bundles, resulting in more accurate and reliable test results. Simultaneously, during the test, the environmental control module can adjust the environmental parameters within the test chamber in real time, maintaining a constant test environment to meet the environmental sensitivity requirements of the sample and reduce performance changes caused by environmental changes during the test, thereby improving the accuracy and reliability of the test results.
[0031] Compared with related technologies, the biomass vascular bundle pull-out test device provided by this utility model can greatly improve the accuracy and reliability of test results, and is more suitable for microscale pull-out testing, biomass material interface strength characterization and environmental response behavior research, and has good promotion value and engineering application prospects. Attached Figure Description
[0032] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0033] Figure 1 This is a schematic diagram of the structure of the biomass vascular bundle pulling experimental device provided in this embodiment of the utility model.
[0034] Figure 2 This is a schematic diagram of the structure of the second tension body provided in an embodiment of the present invention.
[0035] Figure 3 This is a schematic diagram of the second tension body and the sample provided in this embodiment of the utility model.
[0036] Figure label:
[0037] 10. Experimental chamber; 11. Chamber door; 12. Drain outlet; 21. Humidification unit; 210. Steam generator; 212. Air duct; 22. Heating unit; 220. Heating element; 23. Circulating fan; 24. Sensor; 25. CNC system; 30. Pulling module; 31. First pulling body; 32. Second pulling body; 320. Slot; 321. Groove; 322. Notch; 33. Linear drive component; 40. In-situ camera module; 41. Microscope; 42. Adjustment bracket; 50. Sample. Detailed Implementation
[0038] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions 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.
[0039] To better understand the biomass vascular bundle pull-out experimental device provided by this utility model, its application background is first introduced. Bamboo, as a renewable natural composite material with excellent mechanical properties, has attracted much attention due to its unique vascular bundle-thin-wall structure. Among them, the interfacial bonding performance plays a decisive role in the overall mechanical behavior.
[0040] Current common interface testing methods, such as fiber pull-out and interface shearing, are mostly used for resin or inorganic-based composite materials, and have poor adaptability to the environmental sensitivity of natural materials. In addition, during the testing process, the two ends of the sample are often clamped with interlocking clamps, which are generally difficult to stably clamp or fix the small bamboo sample, which can easily lead to sample slippage or damage, affecting the accuracy and reliability of the test results.
[0041] In view of this, the present invention provides a biomass vascular bundle pull-out experimental device, which can effectively improve the accuracy and reliability of the test results.
[0042] The following is combined Figures 1 to 3 This invention describes the experimental apparatus for pulling out biomass vascular bundles.
[0043] Reference Figures 1 to 3A biomass vascular bundle pull-out experimental device includes an experimental chamber 10, an environmental conditioning module, and a pull-out module 30. The experimental chamber 10 has a cavity to provide experimental space. The environmental conditioning module is used to adjust the environmental parameters inside the experimental chamber 10. The pull-out module 30 is disposed inside the experimental chamber 10 and includes a first pull body 31 and a second pull body 32 that are arranged opposite to each other and can move closer or further apart. The first pull body 31 is used to clamp one end of a sample 50. The second pull body 32 has a slot 320. The slot 320 has a relatively small opening 321 on the side of the second pull body 32 facing the first pull body 31. The opening 321 penetrates one side of the second pull body 32 to form a notch 322. The slot 320 is used to clamp the other end of the sample 50.
[0044] In actual testing, a pre-cut biomass sample 50, such as a bamboo sample 50, is laser-cut and its vascular bundles are peeled off under a stereomicroscope. The prepared sample 50 is T-shaped. The sample 50 is then loaded onto the pull-out module 30. The T-shaped end of the sample 50 is inserted into the slot 320 through the notch 322 on the side of the second pull body 32, while the other end of the sample 50 protrudes through the groove 321 of the slot 320 and is clamped by the first pull body 31. This causes the first pull body 31 and the second pull body 32 to move away from each other, applying tensile force to the sample 50. Compared to traditional interlocking clamps, the second pull body 32 uses a snap-fit method to position the sample 50, which can effectively reduce the slippage of the sample 50 and the damage to the vascular bundles, making the test results more accurate and reliable. At the same time, during the test, the environmental control module can adjust the environmental parameters inside the test chamber 10 in real time to maintain a constant test environment, meeting the environmental sensitivity requirements of the sample 50 and reducing the performance changes of the sample 50 caused by environmental changes during the test, which can also improve the accuracy and reliability of the test results.
[0045] Compared with related technologies, the biomass vascular bundle pull-out test device provided in this embodiment can significantly improve the accuracy and reliability of test results, and is more suitable for microscale pull-out testing, biomass material interface strength characterization and environmental response behavior research, and has good promotion value and engineering application prospects.
[0046] It is understood that the specific shape, material, size and other parameters of the experimental chamber 10 need to be set according to the actual experimental requirements, and no specific restrictions are imposed in this embodiment of the utility model.
[0047] In one example of this invention, the experimental chamber 10 has an opening on one side, and a door 11 that can be opened and closed is connected to the opening. Specifically, one side of the door 11 is hinged to the experimental chamber 10, and the other side is a free end that can be fixed to the experimental chamber 10 by a lock. The first pulling body 31 and the second pulling body 32 are both located inside the experimental chamber 10. One of the first pulling body 31 and the second pulling body 32 is fixedly connected to the experimental chamber 10, and the other is connected to the experimental chamber 10 via a linear drive member 33. With this configuration, after the sample 50 is loaded between the first pulling body 31 and the second pulling body 32, the linear drive member 33 drives the first pulling body 31 and the second pulling body 32 to move in opposite directions, thereby applying a tensile force to the sample 50.
[0048] In detail, the first pull body 31 and the second pull body 32 are arranged vertically. The first pull body 31 is located above the second pull body 32 and is fixedly connected to the top of the experimental chamber 10 via a linear drive 33. The first pull body 31 can use a traditional interlocking clamp, such as a clamping head with a wedge-shaped interlocking structure, to clamp the upper end of the sample 50. The second pull body 32 is located below the first pull body 31, with its top end facing the first pull body 31. Structures such as a slot 320, a notch 321, and a notch 322 are provided on the top end of the second pull body 32. The bottom end of the second pull body 32 is fixedly connected to a base fixed to the bottom of the experimental chamber 10.
[0049] In some optional examples, the linear drive component 33 can be any form of linear drive element such as a cylinder, hydraulic cylinder, or electric cylinder, as long as it can meet the tensile force requirements of the experiment. No specific restrictions are imposed in this embodiment of the present invention.
[0050] As the core component of the experimental chamber 10, the environmental conditioning module is mainly used to simulate the experimental environment and keep the environment inside the experimental chamber 10 constant during the test, reducing the performance changes of the sample 50 caused by environmental changes. According to the requirements of different environmental parameters in the experiment, the environmental conditioning module can contain multiple conditioning units to control different environmental parameters.
[0051] In one example of this utility model, refer to Figure 1 The environmental control module includes a humidification unit 21 for regulating the humidity inside the experimental chamber 10. The humidification unit 21 can adjust the humidity inside the experimental chamber 10 according to experimental requirements, meeting the humidity sensitivity requirements of the biomass sample 50.
[0052] In detail, the humidification unit 21 includes a steam generator 210 and a gas duct 212. The steam generator 210 is suitable for heating water to steam through fuel combustion or electric heating. Its specific structure can be referred to the prior art, and will not be described in detail in this embodiment. One end of the gas duct 212 is connected to the steam generator 210, and the other end is connected to the experimental chamber 10. The steam generated by the steam generator 210 can be transported to the experimental chamber 10 through the gas duct 212, thereby humidifying the air in the experimental chamber 10 and allowing the experiment to be carried out within a suitable humidity range.
[0053] In a further example of this utility model, the bottom of the experimental chamber 10 is connected to a drain outlet 12. It is understood that when the humidification unit 21 is used to humidify the air inside the experimental chamber 10, water vapor condensation is unavoidable. Under long-term use, condensate will accumulate at the bottom of the experimental chamber 10. The drain outlet 12 can promptly remove the water at the bottom of the experimental chamber 10, reduce the corrosion of the device components by the accumulated water and the adverse effects that may occur on the experiment, and ensure the service life of the device.
[0054] In a further example of this invention, the environmental control module includes a heating unit 22 for adjusting the temperature inside the experimental chamber 10. The heating unit 22 can adjust the temperature inside the experimental chamber 10 according to experimental requirements, satisfying the temperature sensitivity requirements of the biomass sample 50.
[0055] In detail, the heating unit 22 includes several heating elements 220 disposed within the experimental chamber 10, and the heating elements 220 are arranged around the pulling module 30. The heating elements 220 can be used to adjust the temperature inside the experimental chamber 10, so that the experiment can be carried out within a suitable temperature range.
[0056] In a further example of this invention, the environmental control module also includes a circulating fan 23 connected to the experimental chamber 10. The circulating fan 23 can promote rapid air circulation inside and outside the experimental chamber 10, reset the temperature and humidity inside the experimental chamber 10, and can also work in conjunction with the humidification unit 21 and the heating unit 22 to achieve precise control of temperature and humidity.
[0057] Of course, the environmental control module includes, but is not limited to, the control units listed above. It is understood that, depending on the requirements of different environmental parameters in the experiment, the environmental control module may also include other forms of control units to adjust other environmental parameters in the experimental chamber 10. These will not be listed in this embodiment of the present invention.
[0058] In a further example of this utility model, the biomass vascular bundle pulling experimental device also includes a sensor 24 and a numerical control system 25; wherein, the sensor 24 is used to collect and feedback environmental parameter information inside the experimental chamber 10; the numerical control system 25 is signal-connected to the sensor 24 and the environmental adjustment module, specifically through wire connection, so that the numerical control system 25 can receive the environmental parameter information collected by the sensor 24, and control the environmental adjustment module based on the environmental parameter information and the set parameter range, so that the environmental parameters inside the experimental chamber 10 are maintained within the set range.
[0059] In detail, when the environmental parameters inside the experimental chamber 10 exceed the set range, the sensor 24 feeds back the environmental parameter information to the numerical control system 25. Based on the environmental parameter information detected by the sensor 24 and the set parameter range, the numerical control system 25 controls the environmental adjustment module to adjust the environment inside the experimental chamber 10, maintaining the environment within the set range. Through the feedback adjustment mechanism formed by the numerical control system 25 and the sensor 24, automatic and precise control of the environment inside the experimental chamber 10 can be achieved, thereby improving the testing accuracy.
[0060] More specifically, the CNC system 25 can use an existing PLC controller (Programmable Logic Controller). The PLC controller dynamically adjusts the environmental parameters inside the experimental chamber 10 based on the PID (Proportional-Integral-Derivative) closed-loop control algorithm, thereby maintaining the environmental parameters inside the experimental chamber 10 within the set range.
[0061] In a further example of this utility model, refer to Figure 1 The biomass vascular bundle pulling experimental device also includes an in-situ camera module 40 for recording the experimental process. The in-situ camera module 40 is connected to the numerical control system 25 via a wire. The vascular bundle pulling process recorded by the in-situ camera module 40 is transmitted to the numerical control system 25 via the wire, so that the numerical control system 25 can store, analyze and process the data and images.
[0062] With this setup, the in-situ camera module 40 can visualize the interface behavior during the experiment, observe the interface destruction process in real time, and reveal the interface evolution mechanism more intuitively and clearly. This helps to deepen the understanding of the coupling behavior of vascular bundles and basic tissues, thereby enabling in-depth research on interface mechanisms.
[0063] In detail, the in-situ camera module 40 includes a microscope camera 41 and an adjustment bracket 42; wherein, the lens of the microscope camera 41 is directed toward the test area between the first pull body 31 and the second pull body 32; the adjustment bracket 42 is used to adjust the relative position of the microscope camera 41 and the test area to ensure that the shooting area covers the entire interface contact area.
[0064] More specifically, the microscope camera 41 can be placed inside the experimental chamber 10 to monitor the experimental process; alternatively, a window can be set on the experimental chamber 10 at the position corresponding to the test area, and the experimental process can be monitored by the microscope camera 41 externally placed in the experimental chamber 10. The specific settings can be configured according to actual experimental needs, and no specific limitations are imposed in this embodiment of the invention.
[0065] More specifically, the adjustment bracket 42 may include a one-dimensional telescopic unit, allowing the microscope camera 41 to be adjusted along the length, width, or height of the experimental chamber 10. The adjustment bracket 42 may also include a two-dimensional telescopic unit, allowing the microscope camera 41 to be adjusted along two of the length, width, and height of the experimental chamber 10. The adjustment bracket 42 may also include a three-dimensional telescopic unit, allowing the microscope camera 41 to be adjusted along the length, width, and height of the experimental chamber 10. Furthermore, each telescopic unit may employ a linear telescopic element such as a cylinder or electric cylinder, or a sleeve-type telescopic structure positioned by a set screw. All of the above can be configured according to actual experimental needs, and no specific limitations are imposed in this embodiment of the invention.
[0066] It is understood that, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples.
[0067] In the biomass vascular bundle pull-out test device provided by this utility model embodiment, during the experiment, the T-shaped end of the sample 50 is inserted into the slot 320 through the notch 322 on the side of the second pull body 32, and the other end of the sample 50 is passed through the groove 321 of the slot 320 and clamped by the first pull body 31, so that the first pull body 31 and the second pull body 32 are far apart from each other. A tensile force is applied to the sample 50 for pull-out test. Compared with the traditional interlocking clamp, the second pull body 32 uses a snap-fit method to position the sample 50, which can effectively reduce the slippage of the sample 50 and the damage to the vascular bundle, making the test results more accurate and reliable.
[0068] Meanwhile, during the test, the environmental control module can adjust the environmental parameters inside the test chamber 10 in real time to maintain a constant test environment, meet the environmental sensitivity requirements of the sample 50, reduce the performance changes of the sample 50 caused by environmental changes during the test, and also improve the accuracy and reliability of the test results.
[0069] Furthermore, the in-situ camera module 40 enables visualization of interface behavior during experiments, real-time observation of interface destruction processes, and more intuitive and clear revelation of evolutionary mechanisms. This allows for a deeper understanding of the coupling behavior between vascular bundles and basic tissues, thereby facilitating in-depth research on interface mechanisms.
[0070] Compared with related technologies, the biomass vascular bundle pull-out test device provided in this embodiment can greatly improve the accuracy and reliability of test results. Moreover, the interface is visible, making it more suitable for microscale pull-out testing, characterization of biomass material interface strength, and research on environmental response behavior. It has good promotional value and engineering application prospects.
[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A biomass vascular bundle pull-out test apparatus, characterized by, include: Experimental box (10); An environmental control module is used to adjust the environmental parameters inside the experimental chamber (10); A pull-out module (30) is installed inside the experimental box (10) and includes a first pull body (31) and a second pull body (32) that are arranged opposite to each other and can move closer or further apart. The first tensioning body (31) is adapted to hold one end of the sample (50); The second pull body (32) is provided with a slot (320), and the slot (320) has a groove (321) formed on the side of the second pull body (32) facing the first pull body (31). The groove (321) penetrates one side of the second pull body (32) to form a notch (322). The slot (320) is suitable for engaging the other end of the sample (50).
2. The apparatus according to claim 1, wherein One of the first pull body (31) and the second pull body (32) is fixedly connected to the experimental box (10), and the other is connected to the experimental box (10) through a linear drive (33).
3. The biomass vascular bundle pull-out experimental apparatus according to claim 1, characterized in that, Also includes: Sensor (24) is suitable for collecting and feeding back environmental parameter information inside the experimental chamber (10); The numerical control system (25) is connected to the sensor (24) and the environmental control module. It is suitable for receiving the environmental parameter information and controlling the environmental control module based on the environmental parameter information and the set parameter range, so that the environmental parameters in the experimental chamber (10) are kept within the set range.
4. The biomass vascular bundle pull-out experimental apparatus according to any one of claims 1 to 3, characterized in that, The environmental control module includes: A humidification unit (21) for adjusting the humidity inside the experimental chamber (10); and / or, Heating unit (22) used to regulate the temperature inside the experimental chamber (10).
5. The biomass vascular bundle pull-out experimental apparatus according to claim 4, characterized in that, The humidification unit (21) includes: Steam generator (210), suitable for generating steam; The gas delivery pipe (212) is connected at one end to the steam generator (210) and at the other end to the experimental chamber (10).
6. The biomass vascular bundle pull-out experimental apparatus according to claim 4, characterized in that, The heating unit (22) includes: Several heating elements (220) are installed inside the experimental chamber (10), and the heating elements (220) are arranged around the pulling module (30).
7. The biomass vascular bundle pull-out experimental apparatus according to claim 4, characterized in that, The environmental control module also includes a circulating fan (23) connected to the experimental chamber (10).
8. The biomass vascular bundle pull-out experimental apparatus according to claim 4, characterized in that, The bottom of the experimental box (10) is connected to a drain outlet (12).
9. The biomass vascular bundle pull-out experimental apparatus according to claim 1, characterized in that, It also includes an in-situ camera module (40) for recording the experimental process.
10. The biomass vascular bundle pull-out experimental apparatus according to claim 9, characterized in that, The in-situ camera module (40) includes: A microscope camera (41) with its lens facing the test area between the first pull body (31) and the second pull body (32); An adjustment bracket (42) is used to support the microscope camera (41) and adjust the relative position of the microscope camera (41) and the test area.