Self-sensing intelligent rock splitting test system convenient to operate

Abstract

The utility model relates to the technical field of automatic testing of tensile strength of rocks, and discloses a self-sensing intelligent rock splitting test system convenient to operate, which comprises a base, a fixing device is fixedly connected to the top of the base, a lower pressure transfer plate is fixedly connected to the top of the fixing device, and a cushion groove is fixedly connected to the top of the lower pressure transfer plate. A cushion groove is formed in the top of the base, a bottom plate cushion strip is arranged in the cushion groove, a rock cylinder sample is arranged at the top of the bottom plate cushion strip, a clamping mechanism and a control mechanism are arranged at the top of the base, two counter-force steel columns are fixedly connected to the top of the base, and a plurality of positioning holes are formed in the outer sides of the two counter-force steel columns. According to the system, the problem of actual measurement of the tensile strength of the rock is solved, a self-sensing intelligent clamping and centering system is researched and developed, accurate centering and automatic withdrawing of a sample are realized, and defects and potential safety hazards of manual operation are overcome. Load is dynamically applied through an integrated control system, automatic testing is completed, the measuring precision and efficiency are improved, and engineering design and construction are served.

Description

Technical Field

[0001] This utility model relates to the field of automated testing technology for rock tensile strength, and in particular to a self-sensing intelligent rock splitting test system that is easy to operate. Background Technology

[0002] In underground engineering, rocks often undergo tensile failure. Convenient and rapid testing of rock tensile strength during construction, and providing on-site tensile strength data, is crucial for ensuring the safety, stability, and feasibility of underground or tunnel engineering projects. Therefore, there is an urgent need for a convenient, rapid, and highly automated rock splitting test device to meet the needs of rock mechanics teaching, research, and production.

[0003] Currently, most laboratory rock splitting tests are conducted using a rock centering and fixing device in conjunction with a press. However, manual operation is still required when placing and centering the cylindrical rock specimen, and the specimen's centering must be visually observed. Just as the specimen is nearing center and making contact with the spacer, the grip must be released promptly, and a vertical load applied. Upon release, the specimen is prone to rolling, deviating from the loading center, causing distortion of tensile strength test data. In severe cases, this can lead to brittle fracture during specimen failure, posing a significant safety hazard. How to achieve automatic and precise centering of the cylindrical rock specimen by the clamping and centering system, and how to intelligently apply a vertical load and intelligently retract the clamping device after sensing the centering effect, is a topic rarely addressed in current invention patents. Therefore, there is an urgent need to develop a portable, self-sensing, intelligent rock splitting test system suitable for engineering sites, capable of conveniently, quickly, and accurately testing the tensile strength of rocks, serving engineering practice.

[0004] To address these issues, a user-friendly, self-sensing, intelligent rock splitting test system is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a user-friendly self-sensing intelligent rock splitting test system, which aims to improve the operational defects and safety hazards of manual support in rock splitting tests.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a convenient self-sensing intelligent rock splitting test system, including a base, a fixing device fixedly connected to the top of the base, a lower pressure plate fixedly connected to the top of the fixing device, a pad groove fixedly connected to the top of the lower pressure plate, a bottom plate pad strip provided inside the pad groove, a cylindrical rock sample provided on the top of the bottom plate pad strip, a clamping mechanism and a control mechanism provided on the top of the base, two reaction steel columns fixedly connected to the top of the base, multiple adjustment holes opened on the outer side of the two reaction steel columns, and a pressing mechanism provided on the outer side of the reaction steel columns;

[0007] The clamping mechanism includes a motor, which is fixedly connected to the top of the base. A screw is fixedly connected to the output end of the motor. Two fixed steel plates are threaded to the outer side of the screw, and a clamping centering block is fixedly connected to the opposite side of the two fixed steel plates.

[0008] As a further description of the above technical solution:

[0009] The control mechanism includes an integrated control box, the bottom of which is fixedly connected to the top of the base, and an LCD screen is fixedly connected to the top of the integrated control box. A start button, a run button, and a reset button are provided on the outside of the integrated control box.

[0010] As a further description of the above technical solution:

[0011] The pressing mechanism includes a crossbeam, which is bolted to two corresponding adjustment holes. An oil pump is fixedly connected to the bottom of the crossbeam, and two compound springs are fixedly connected to the bottom of the crossbeam. A pressure plate is fixedly connected to the bottom of the two compound springs, and an upper pressure plate is fixedly connected to the bottom of the pressure plate. A top plate pad is fixedly connected to the bottom of the upper pressure plate, and an electric oil pump is fixedly connected to the top of the base. An oil delivery pipe is fixedly connected to the output end of the electric oil pump. The end of the oil delivery pipe away from the electric oil pump is fixedly connected to the outside of the crossbeam, and a regulating valve is fixedly connected to the end of the oil delivery pipe near the crossbeam.

[0012] As a further description of the above technical solution:

[0013] Both the electric oil pump and the motor are connected to the integrated control box via data transmission lines.

[0014] As a further description of the above technical solution:

[0015] The two clamping blocks abut against the outer side of the rock cylinder sample on opposite sides, and the bottom of the top plate pad abuts against the top of the rock cylinder sample.

[0016] As a further description of the above technical solution:

[0017] A connecting plate is fixedly connected between the two reaction steel columns.

[0018] As a further description of the above technical solution:

[0019] The top of the base is fixedly connected to a slide rail, and the bottom of the fixed steel plate is slidably connected inside the slide rail.

[0020] As a further description of the above technical solution:

[0021] The integrated control box is electrically connected to the LCD screen, start button, run button, and reset button.

[0022] This utility model has the following beneficial effects:

[0023] 1. This utility model presents a system that overcomes the challenge of on-site measurement of rock tensile strength in engineering projects. It features a self-sensing intelligent clamping and centering system, providing safe and efficient rock tensile strength test data. This system overcomes the operational defects and potential dangers of manually supporting and centering cylindrical rock specimens during existing rock splitting tests. It achieves self-sensing intelligent clamping and centering of the cylindrical rock specimen and self-sensing intelligent withdrawal from the clamp. An integrated control system automatically applies vertical loads, dynamically displaying the load application process on an LCD screen, ultimately completing the automated rock tensile strength test. The system is structurally sound, easy to operate, and intelligently functional, facilitating safe and effective on-site operation for various technicians, construction workers, and students. The development of this self-sensing intelligent clamping and centering system enables precise centering of the cylindrical rock specimen, improving the accuracy of rock tensile strength measurement. It provides precise and efficient services for engineering design and construction practice, representing an innovation in rock splitting test devices. Attached Figure Description

[0024] Figure 1 This is a front cross-sectional view of the self-sensing intelligent rock splitting test system that is easy to operate according to this utility model.

[0025] Figure 2 This is a front cross-sectional view of the self-sensing intelligent rock splitting test system that is easy to operate according to this utility model.

[0026] Figure 3 This is a top view of the self-sensing intelligent rock splitting test system that is easy to operate, as proposed in this utility model.

[0027] Figure 4 This is a block diagram showing the system connections and working principle of the self-sensing intelligent rock splitting test system proposed in this utility model, which is easy to operate.

[0028] Legend:

[0029] 1. Rock cylindrical sample; 2. Clamping and centering block; 3. Fixing steel plate; 4. Lower pressure plate; 5. Base plate pad; 6. Pad groove; 7. Fixing device; 8. Helical screw; 9. Slide rail; 10. Motor; 11. Base; 12. Reaction steel column; 13. Top plate pad; 14. Upper pressure plate; 15. Bearing plate; 16. Compound spring; 17. Oil pump; 18. Crossbeam; 19. Adjustment hole; 20. Connecting plate; 21. Oil pipeline; 22. Regulating valve; 23. Integrated control box; 24. LCD display screen; 25. Electric oil pump; 26. Start button; 27. Run button; 28. Reset button; 29. ​​Data transmission line. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figures 1-4 An embodiment of this utility model provides a convenient self-sensing intelligent rock splitting test system, including a base 11, a fixing device 7 fixedly connected to the top of the base 11, a lower pressure plate 4 fixedly connected to the top of the fixing device 7, a pad groove 6 fixedly connected to the top of the lower pressure plate 4, a bottom plate pad strip 5 provided inside the pad groove 6, a rock cylindrical sample 1 provided on the top of the bottom plate pad strip 5, a clamping mechanism and a control mechanism provided on the top of the base 11, two reaction steel columns 12 fixedly connected to the top of the base 11, multiple adjustment holes 19 opened on the outer side of the two reaction steel columns 12, and a pressing mechanism provided on the outer side of the reaction steel columns 12;

[0032] The clamping mechanism includes a motor 10, which is fixedly connected to the top of the base 11. A screw 8 is fixedly connected to the output end of the motor 10. Two fixed steel plates 3 are threaded onto the outer side of the screw 8, and clamping and centering blocks 2 are fixedly connected to opposite sides of the two fixed steel plates 3. The base 11 provides overall support and stability for the equipment, bearing the clamping mechanism, control mechanism, and reaction steel column 12, ensuring the safety of the test process and the stability of the equipment operation. The fixing device 7 is used to fix the lower pressure plate 4, ensuring its stable position and providing basic support for the installation of the rock cylindrical specimen 1. The lower pressure plate 4 ensures that the specimen is subjected to uniform force and is in a fixed state. The groove 6 supports the rock cylindrical specimen 1 and the base plate pad 5, providing a stable installation environment and preventing uneven force distribution caused by direct contact between the specimen and the lower pressure plate 4. The base plate pad 5 further stabilizes the rock cylindrical specimen 1 and also acts as a buffer, preventing damage to the specimen from direct contact with the groove 6. The rock cylindrical specimen 1 is the experimental object, and its mechanical properties, such as splitting strength, are studied through loading. Motor 10 provides power, driving the screw 8 via rotation to automate the clamping mechanism. The screw 8 converts the rotational motion of motor 10 into linear motion of the clamping and centering block 2, used for clamping and centering the cylindrical rock specimen 1. Fixed steel plate 3 supports and guides the clamping and centering block 2 to move smoothly on slide rail 9. The clamping and centering block 2 contacts the cylindrical rock specimen 1, achieving precise centering of the specimen through sensing and adjustment, ensuring experimental accuracy. Reaction steel column 12 provides vertical reaction support, enhancing the load-bearing capacity of the equipment, and adjusts the experimental loading height range via adjustment hole 19 in conjunction with crossbeam 18. Adjustment hole 19 is used to adjust the installation height of crossbeam 18, adapting to specimens of different sizes and increasing the applicability and flexibility of the equipment.

[0033] Reference Figure 1 and Figure 4 The control mechanism includes an integrated control box 23, which is fixedly connected to the top of the base 11. An LCD screen 24 is fixedly connected to the top of the integrated control box 23. A start button 26, a run button 27, and a reset button 28 are located on the outside of the integrated control box 23. The integrated control box 23 is electrically connected to the LCD screen 24, the start button 26, the run button 27, and the reset button 28. The integrated control box 23 is the core of the entire device, used to control and coordinate the work of various parts to ensure the smooth progress of the test. The LCD screen 24 displays real-time test data, such as the magnitude of the applied force and the test progress, allowing users to easily monitor the device's operating status. The start button 26 starts the test and allows the device to begin working. The run button 27 controls the loading process, such as starting the oil pump 17 and gradually increasing the loading force. The reset button 28 restores the device to its initial state after the test, such as releasing pressure and resetting the clamping mechanism, for convenient use next time.

[0034] Reference Figure 1 and Figure 4 The pressing mechanism includes a crossbeam 18, which is bolted to two corresponding adjusting holes 19. An oil pump 17 is fixedly connected to the bottom of the crossbeam 18, along with two compound springs 16. A pressure plate 15 is fixedly connected to the bottom of the two compound springs 16, and an upper pressure plate 14 is fixedly connected to the bottom of the pressure plate 15. A top plate pad 13 is fixedly connected to the bottom of the upper pressure plate 14. An electric oil pump 25 is fixedly connected to the top of the base 11, and an oil supply pipe 21 is fixedly connected to the output end of the electric oil pump 25. The end of the oil supply pipe 21 away from the electric oil pump 25 is fixedly connected to the outside of the crossbeam 18, and a regulating valve 22 is fixedly connected to the end of the oil supply pipe 21 near the crossbeam 18. The crossbeam 18 primarily bears and transmits vertical pressure, ensuring a smooth and reliable loading process. The adjusting holes 19 are used to adjust the height of the crossbeam 18, which is fixed with bolts to accommodate samples of different heights. The oil pump 17 provides a vertical pressure source, pushing the compound springs 16 and other components to apply downward pressure. The compound spring 16 acts as a buffer and absorbs impact, preventing sudden pressure increases from damaging the sample and maintaining a smooth loading process. The bearing plate 15 evenly transmits the pressure from the compound spring 16 to the upper pressure plate 14, preventing uneven localized stress. The upper pressure plate 14 directly contacts the top plate pad 13, applying pressure evenly to the top of the sample to ensure accurate test results. The top plate pad 13 acts as a buffer layer on top of the sample, further distributing pressure evenly and reducing damage caused by direct contact. The electric oil pump 25 provides hydraulic power to the system, transmitting pressure to the crossbeam 18 through the oil pipe 21 to ensure stable loading force. The oil pipe 21 connects the electric oil pump 25 and the crossbeam 18, transmitting hydraulic oil to ensure the loading force is smoothly transmitted to the sample. The regulating valve 22 is used to adjust the flow and pressure of the hydraulic oil, precisely controlling the magnitude of the loading force to ensure the flexibility and safety of the testing process.

[0035] Reference Figures 1-3Both the electric oil pump 25 and the motor 10 are connected to the integrated control box 23 via data transmission line 29. The electric oil pump 25 provides the main power source for the hydraulic system, transmitting hydraulic oil through the oil supply pipe 21 to the crossbeam 18 and the pressing mechanism, ensuring the stability and continuity of the loading pressure. Connected to the integrated control box 23, it can receive control signals, accurately execute pressure loading commands, and support automated operation. The motor 10 drives the clamping mechanism, achieving linear movement of the clamping block through the screw 8, ensuring the sample is firmly fixed and centered. Also connected to the integrated control box 23 via data transmission line 29, it receives commands and achieves precise control of speed and direction, ensuring efficient and safe operation. Data transmission line 29 connects the electric oil pump 25 and the motor 10 to the integrated control box 23, enabling bidirectional transmission of data and commands. It is responsible for real-time feedback of the equipment's operating status, such as the motor 10's speed, the oil pump 17's pressure and flow rate, ensuring the control system can accurately monitor and adjust the equipment. It provides communication interfaces between the various modules of the equipment, ensuring system coordination and operational stability. The integrated control box 23 collects equipment operation data in real time through the data transmission line 29, sends precise operation commands to the oil pump 17 and motor 10, and displays key parameters on the LCD screen 24 to help users complete operations efficiently.

[0036] Reference Figure 1 and Figure 3 A connecting plate 20 is fixedly connected between the two reaction steel columns 12. The connecting plate 20 is used to further reinforce the two reaction steel columns 12 and ensure stability during use.

[0037] Reference Figures 1-4 A slide rail 9 is fixedly connected to the top of the base 11, and the bottom of the fixing steel plate 3 is slidably connected inside the slide rail 9. The slide rail 9 is fixedly installed on the top of the base 11 to guide the sliding of the fixing steel plate 3, providing a stable and low-friction sliding path. The positioning function of the slide rail 9 allows for easy adjustment of the position of the fixing steel plate 3 to accommodate specimens of different specifications or sizes. The slidable connection between the fixing steel plate 3 and the slide rail 9 allows for flexible adjustment of its position to meet the installation and fixing requirements of the specimen. This serves to stabilize the specimen or structural components, ensuring that the specimen remains stable during pressure loading and does not shift or tilt.

[0038] Working principle: Place the cylindrical rock sample 1 on the upper part of the pad 6, press the start button 26 to start the equipment. The clamping and centering block 2, under the connection of the fixed steel plate 3, moves towards each other through the slide rail 9, slowly pushing the cylindrical rock sample 1 to the position of the centering bottom plate pad 5. At this time, the clamping and centering block 2 applies a force of about 1-2N to the cylindrical rock sample 1. This force is sensed by the sensor in the clamping and centering block 2 and the data is transmitted to the integrated control box 23. The LCD screen 24 of the integrated control box 23 will display the message "Sample has been centered, please press the run button 27". Clicking the run button 27 will cause the integrated control box 23 to send a command to the electric oil pump 25, outputting the set oil volume through the oil pipe 21 to the crossbeam 18 and oil pump 17 in the frame system. This drives the compound spring 16, bearing plate 15, upper pressure plate 14, and top plate pad 13 to move downwards until they contact the rock cylindrical sample 1 and apply a load of approximately 2N. At this time, the clamping centering block 2 automatically exits the clamping operation after sensing the vertical load through its built-in sensor. Under the connection of the fixed steel plate 3, it moves backwards along the slide rail 9, stopping when it reaches approximately 1 / 3 of the slide rail 9 near the motor 10. After the clamping centering block 2 stops, the vertical load will continue to be applied until the sample is damaged. At this time, the LCD screen 24 will display the dynamic loading process of the vertical load. When the sample is damaged, the screen will display the message "Sample damaged, please press the reset button 28". Clicking the reset button 28 will remove the vertical load from the frame system, causing the crossbeam 18 and oil pump 17 to move the compound spring 16, pressure plate 15, upper pressure plate 14, and top plate pad 13 upwards to their initial positions. After the test, data can be saved or copied by clicking the LCD screen 24, or transferred to a mobile phone or computer via Bluetooth or hotspot. The user-friendly self-sensing intelligent rock splitting test system can also be operated on a mobile phone via a self-sensing intelligent splitting device APP. The entire operation process is simple, convenient, safe, and effective.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A user-friendly self-sensing intelligent rock splitting test system, including a base (11), characterized in that: The base (11) is fixedly connected to a fixing device (7) at the top. The fixing device (7) is fixedly connected to a lower pressure plate (4) at the top. The lower pressure plate (4) is fixedly connected to a pad groove (6) at the top. A bottom plate pad strip (5) is provided inside the pad groove (6). A rock cylinder sample (1) is provided on the top of the bottom plate pad strip (5). A clamping mechanism and a control mechanism are provided on the top of the base (11). Two reaction steel columns (12) are fixedly connected to the top of the base (11). Multiple adjustment holes (19) are opened on the outer side of the two reaction steel columns (12). A pressing mechanism is provided on the outer side of the reaction steel columns (12). The clamping mechanism includes a motor (10), which is fixedly connected to the top of the base (11). The output end of the motor (10) is fixedly connected to a screw (8). Two fixed steel plates (3) are threadedly connected to the outside of the screw (8). A clamping centering block (2) is fixedly connected to the opposite side of the two fixed steel plates (3).

2. The user-friendly self-sensing intelligent rock splitting test system according to claim 1, characterized in that: The control mechanism includes an integrated control box (23), the bottom of which is fixedly connected to the top of the base (11), and an LCD screen (24) is fixedly connected to the top of the integrated control box (23). A start button (26), a run button (27), and a reset button (28) are provided on the outside of the integrated control box (23).

3. The user-friendly self-sensing intelligent rock splitting test system according to claim 2, characterized in that: The pressing mechanism includes a crossbeam (18), which is bolted to the inside of two corresponding adjustment holes (19). An oil pump (17) is fixedly connected to the bottom of the crossbeam (18). Two compound springs (16) are fixedly connected to the bottom of the crossbeam (18). A pressure plate (15) is fixedly connected to the bottom of the two compound springs (16). An uploading pressure plate (14) is fixedly connected to the bottom of the pressure plate (15). A top plate pad (13) is fixedly connected to the bottom of the uploading pressure plate (14). An electric oil pump (25) is fixedly connected to the top of the base (11). An oil delivery pipe (21) is fixedly connected to the output end of the electric oil pump (25). The end of the oil delivery pipe (21) away from the electric oil pump (25) is fixedly connected to the outside of the crossbeam (18). A regulating valve (22) is fixedly connected to the end of the oil delivery pipe (21) near the crossbeam (18).

4. The user-friendly self-sensing intelligent rock splitting test system according to claim 3, characterized in that: The electric oil pump (25) and the motor (10) are both connected to the integrated control box (23) via a data transmission line (29).

5. The user-friendly self-sensing intelligent rock splitting test system according to claim 3, characterized in that: The two clamping and centering blocks (2) abut against the outer side of the rock cylinder sample (1) on opposite sides, and the bottom of the top plate pad (13) abuts against the top of the rock cylinder sample (1).

6. The user-friendly self-sensing intelligent rock splitting test system according to claim 1, characterized in that: A connecting piece (20) is fixedly connected between the two reaction steel columns (12).

7. The user-friendly self-sensing intelligent rock splitting test system according to claim 1, characterized in that: The top of the base (11) is fixedly connected to a slide rail (9), and the bottom of the fixed steel plate (3) is slidably connected inside the slide rail (9).

8. The user-friendly self-sensing intelligent rock splitting test system according to claim 3, characterized in that: The integrated control box (23) is electrically connected to the liquid crystal display screen (24), the start button (26), the run button (27), and the reset button (28).

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