Rock damage mechanics testing device under high pressure environment

Abstract

This invention discloses a rock damage mechanics testing device under high pressure, belonging to the field of rock damage mechanics testing technology. It includes an outer frame, a test frame, a pressure generating unit, at least one auxiliary frame, a driving component, an adjusting component, and an auxiliary component. The auxiliary component contains at least two seals and a spacing adjustment structure between them, slidably and sealingly disposed within the auxiliary frame and the test frame. The driving component drives the auxiliary component to move axially through the adjusting component, transferring the rock sample between the test frame and the auxiliary frame while maintaining the high pressure state of the test frame. Simultaneously, the spacing adjustment structure can flexibly change the accommodating space to adapt to samples of different sizes. This device avoids the problems of long interruption time and low efficiency caused by the need for complete depressurization each time a sample is changed in traditional testing, achieving continuous operation, shortening the testing interval, and ensuring reliable sealing, providing an efficient and flexible testing platform for rock damage mechanics research.

Description

Technical Field

[0001] This invention relates to the field of rock damage mechanics testing technology, and specifically to a rock damage mechanics testing device under high pressure. Background Technology

[0002] In rock geological exploration and underground engineering development, damage mechanics testing of rocks under high-pressure environments is an important means of assessing their stability and safety. By simulating high-pressure conditions, the mechanical response of rocks under different stress states can be obtained, providing a reliable basis for mining, tunnel excavation, and underground structure design.

[0003] Currently, common high-pressure rock damage mechanics testing devices typically require placing rock samples into a sealed testing chamber, using compressors or other equipment to increase the pressure within the chamber, followed by mechanical loading and damage monitoring. However, in practice, after testing one rock sample, testing the next typically requires completely depressurizing the entire testing chamber, opening the seal to remove the tested rock, inserting a new rock, and then repressurizing to the target pressure. This process not only results in prolonged testing interruptions but also reduces testing efficiency due to frequent pressurization and depressurization operations, especially when testing different rock samples in batches. Furthermore, the relatively fixed space of the testing chamber in existing devices makes it difficult to flexibly adapt to the testing needs of rock samples of different sizes, and it is also inconvenient to quickly change or adjust the sample position while maintaining high pressure. Summary of the Invention

[0004] The purpose of this invention is to provide a rock damage mechanics testing device under high pressure. By setting an auxiliary frame connected to the test frame, and an auxiliary component that is slidably and sealingly installed within the auxiliary frame and the test frame, the auxiliary component includes at least two seals and a spacing adjustment structure connected between the seals. In conjunction with a drive component and an adjustment component, the auxiliary component is driven to move axially. This allows the rock sample to be transferred between the test frame and the auxiliary frame while maintaining the high pressure state within the test frame. At the same time, the spacing adjustment structure changes the size of the accommodating space between adjacent seals, thus effectively solving the problems of existing rock damage mechanics testing devices that require complete depressurization when changing rock samples, resulting in long test interruption times, low efficiency, and an inability to flexibly adapt the test space to samples of different sizes.

[0005] This invention is achieved through the following technical solution:

[0006] A rock damage mechanics testing device under high pressure includes an outer frame and a test frame disposed within the outer frame, and a pressure generating unit that forms a pressure chamber inside the test frame, and further includes:

[0007] At least one auxiliary frame is connected to at least one side of the test frame;

[0008] The driving component is located outside the test frame;

[0009] The adjustment component is connected in transmission to the drive component;

[0010] An auxiliary component is connected to the adjustment component and is slidably and sealed inside the auxiliary frame and the test frame;

[0011] The auxiliary component includes at least two seals and a spacing adjustment structure connected between adjacent seals to change the space size for accommodating the rock sample between adjacent seals; the driving component drives the auxiliary component to move axially through the adjustment component to transfer the rock sample between the test frame and the auxiliary frame, and maintains the pressure state within the test frame during the transfer.

[0012] In this scheme, by setting up an auxiliary frame connected to the test frame, an auxiliary component with a sliding seal arranged in between, and a spacing adjustment structure, combined with the linkage of the drive component and the adjustment component, the rock sample can be smoothly transferred from the test frame to the auxiliary frame or vice versa while maintaining a high-pressure environment in the test frame without depressurization. At the same time, the spacing adjustment structure can flexibly change the accommodation space between adjacent seals, thereby accommodating rock samples of different sizes. This avoids the time interruption and efficiency loss caused by the need for complete depressurization to replace the sample after each test in traditional devices, improves the continuous operation capability of batch rock samples in high-pressure mechanical testing, shortens the test interval, and ensures reliable sealing performance throughout the process, thus ensuring the stability of the high-pressure simulation environment. This provides an efficient and flexible testing platform for rock damage mechanics research.

[0013] As an optimized solution for a rock damage mechanics testing device under high pressure, the auxiliary component includes a first seal, a second seal, and a third seal arranged sequentially. The spacing adjustment structure includes an outer screw and an inner screw disposed between the second seal and the third seal. The inner screw is threaded into the interior of the outer screw and can extend and retract relative to it, so that a variable and relatively independent accommodating space is formed between the second seal and the third seal. When the driving component and the adjusting component drive the auxiliary component to move axially as a whole, the rock sample in this space can be smoothly transferred from the test frame and the auxiliary frame. During the movement, the seal always maintains a sliding seal with the inner wall of the frame. Thus, while maintaining the high pressure state inside the test frame, reliable loading, transfer, and unloading of rock samples of different sizes are achieved, further improving the adaptability and continuous operation efficiency of the testing device.

[0014] As an optimized solution for a rock damage mechanics testing device under high pressure, the drive assembly includes a power source, an active wheel driven by the power source, and a connecting rod coaxially arranged with the active wheel. The other end of the connecting rod is provided with a drive wheel. The active wheel and the drive wheel are respectively connected to two sets of the adjustment components for transmission. This can ensure that the auxiliary components on both sides of the test frame remain synchronized during axial movement, avoiding the risk of the auxiliary components becoming skewed, stuck, or unevenly rubbed or even leaking between the seal and the inner wall of the frame due to inconsistent movement on both sides.

[0015] As an optimized solution for rock damage mechanics testing device under high pressure, in order to facilitate automated operation and repeatable positioning, the adjustment component includes a threaded rod and a connecting sleeve plate threaded onto it. The threaded rod is connected to the drive component for transmission, and the connecting sleeve plate is fixedly connected to the auxiliary component through a connecting rod, thereby efficiently and smoothly converting the rotational motion output by the drive component into the linear reciprocating motion of the auxiliary component along the axial direction.

[0016] As an optimized solution for a rock damage mechanics testing device under high pressure, a set of transition frames is provided on both sides of the test frame. Auxiliary frame one and auxiliary frame two are respectively connected to the outer side of the transition frames. The driving component and the adjusting component are set on one side of auxiliary frame one and / or auxiliary frame two, thereby constructing a symmetrical bidirectional rock sample transfer channel. Among them, the transition frame, as the transition section between the test frame and the auxiliary frame, can effectively reduce the pressure fluctuations or sealing disturbances that may occur when the sealing element crosses the joints of different frames during the movement of the auxiliary components, playing a role in buffering and smooth pressure transition. At the same time, it provides a continuous sliding sealing surface for the sealing element, ensuring that the high pressure state in the test frame is always maintained when the rock sample is sent from one auxiliary frame to the test frame, from the test frame to the other auxiliary frame, or during bidirectional alternating testing.

[0017] As an optimized solution for a rock damage mechanics testing device under high pressure, a guide shaft is connected to the middle of one side of the drive wheel. An inclined plate is rotatably mounted on the outside of the guide shaft. The rotational pair formed by the guide shaft and the inclined plate can limit the radial runout and axial sway of the drive wheel, ensuring that the drive wheel maintains a stable axial position during rotation. The auxiliary frame two is fixedly connected to one side of the inclined plate, and the length of the connecting rod is greater than the length of the transition frame, the auxiliary frame one, the test frame, and the auxiliary frame two combined, further improving the reliability and positional accuracy of the rock sample during transfer under high pressure.

[0018] As an optimized solution for rock damage mechanics testing device under high pressure, the outer surface of the sealing element is provided with a sealing rubber pad. The sealing element is slidably disposed inside the auxiliary frame, transition frame and test frame respectively. During the axial movement of the auxiliary component, the sealing rubber pad always maintains elastic contact with the inner wall of each frame and forms a dynamic seal, effectively preventing cross-flow or leakage of high pressure gas between different frames.

[0019] As an optimized solution for rock damage mechanics testing device under high pressure, the top of the auxiliary frame is equipped with an openable threaded cover, providing an independent and convenient channel for taking and placing rock samples.

[0020] As an optimized solution for a rock damage mechanics testing device under high pressure, the outer frame is hollow and used to contain liquid. A monitoring component for detecting the sealing performance of the test frame is also provided on one side of the inner side of the outer frame. When gas leakage occurs in the test frame, the leaked high-pressure gas will enter the liquid inside the outer frame and form continuous bubbles. The monitoring component can detect and alarm parameters such as liquid level changes, bubble frequency or acoustic signals in real time, so as to realize continuous and automatic monitoring of the sealing status.

[0021] As an optimized solution for rock damage mechanics testing devices under high pressure, the monitoring component includes a liquid level alarm and an adjustment structure for adjusting the height of the liquid level alarm. This allows the liquid level alarm to be flexibly adjusted in height according to the actual liquid level inside the outer frame or different detection sensitivity requirements, thereby adapting to the changing needs of leakage detection thresholds under different working conditions. When gas leakage occurs in the test frame, causing the liquid level to rise or fall beyond the set range, the liquid level alarm can respond in real time and issue an alarm signal, realizing quantitative and automated monitoring of the sealing status.

[0022] In summary, compared with the prior art, the present invention has the following main advantages and beneficial effects:

[0023] 1. By setting up an auxiliary frame, a sliding and sealing auxiliary component, and a drive and adjustment component, the present invention can smoothly transfer rock samples between the test frame and the auxiliary frame while maintaining the high pressure state in the test frame without depressurization. This avoids the drawback of traditional devices that require complete depressurization before sample replacement after each test, and greatly improves the continuous testing efficiency of batch rock samples.

[0024] 2. The auxiliary component of the present invention has a spacing adjustment structure between adjacent seals, which can adjust the size of the accommodating space according to the thickness or size of the rock sample, and the threaded fit has a self-locking characteristic, which can maintain the set spacing under high pressure, thereby expanding the versatility and adaptability of the device;

[0025] 3. The drive assembly of the present invention adopts a layout of drive wheel, coaxial connecting rod and end drive wheel, so that one power source can synchronously drive two sets of adjustment components on both sides of the test frame, ensuring that the moving speed and stroke of the auxiliary components on both sides are completely consistent, avoiding the problems of skew, jamming or uneven sealing, and improving the positional accuracy and stability during the transfer process;

[0026] 4. The adjustment component of the present invention uses a threaded rod and a connecting sleeve plate to convert rotational motion into axial linear motion. It has high transmission accuracy and strong load-bearing capacity. Moreover, relying on the self-locking characteristic of the thread, it can reliably maintain the position of the auxiliary component after the drive stops, preventing accidental displacement due to pressure fluctuations or external interference, thus improving the safety and controllability of operation.

[0027] 5. The outer frame of this invention is hollow and contains liquid, and is equipped with a liquid level alarm with height adjustment function. When the test frame leaks, gas enters the liquid and forms bubbles or causes changes in liquid level. The alarm can respond and sound an alarm in real time, realizing quantitative and automatic monitoring of the sealed state, which significantly improves the safety and reliability of the high-pressure test device. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings:

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the connection and distribution structure of the auxiliary frame 2 and the drive wheel in this invention;

[0031] Figure 3 This is a schematic diagram of the drive component structure of the present invention;

[0032] Figure 4 This is a schematic diagram of the auxiliary component structure of the present invention;

[0033] Figure 5 This is a partial cross-sectional structural diagram of auxiliary frame one, test frame and auxiliary frame two of the present invention;

[0034] Figure 6 This is a schematic diagram of the monitoring component structure of the present invention.

[0035] The attached diagram shows the markings and corresponding component names:

[0036] 1-Outer frame, 2-Transition frame, 3-Auxiliary frame one, 4-Test frame, 5-Auxiliary frame two, 6-Threaded cover, 7-Connecting pipe, 8-Transmission gear one, 9-Sloping plate, 10-Guide shaft, 11-Drive wheel, 12-Transmission gear two, 13-Drive assembly, 1301-Servo motor, 1302-Drive wheel, 1303-Connecting rod, 14-Adjusting assembly, 1401-Threaded rod, 1402-Connecting sleeve plate, 1403- Connecting rod, 15-Auxiliary component, 1501-Sealing plate one, 1502-Mounting column, 1503-Outer screw, 1504-Sealing plate two, 1505-Inner screw, 1506-Sealing plate three, 16-Gas pipe, 17-Mounting base, 18-Pressure generating unit, 19-Monitoring component, 1901-Mounting plate, 1902-Fixing plate, 1903-Adjusting screw, 1904-Base plate, 1905-Level alarm. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0038] Example 1

[0039] This embodiment 1 provides a rock damage mechanics testing device under high pressure, such as... Figures 1 to 5 As shown, it includes an outer frame 1, a test frame 4 disposed inside the outer frame 1, and a pressure generating unit 18 that forms a pressure chamber inside the test frame 4. The outer frame 1 is hollow inside and is used to contain liquid to assist in the sealing test. The pressure generating unit 18 is preferably a compressor, and its output end is connected to the inside of the test frame 4 through an air pipe 16 to input compressed air into the test frame 4 to form a high-pressure environment.

[0040] Among them, such as Figure 1 As shown, a set of transition frames 2 are provided on both sides of the test frame 4 along its axial direction. Each set of transition frames 2 is connected to an auxiliary frame 3 and an auxiliary frame 5 on its outer side, meaning the two auxiliary frames are connected to both sides of the test frame 4. The auxiliary frames 3 and 5 have identical structures, and both have an openable threaded cap 6 at their top for independently placing and removing rock samples. In this embodiment, the transition frames 2, auxiliary frames 3, test frame 4, and auxiliary frames 5 together form a continuous cylindrical channel, and the outer surfaces of all the aforementioned frames are entirely fitted inside the outer frame 1.

[0041] Among them, such as Figure 3As shown, a drive assembly 13 is provided on one side of the auxiliary frame 3. The drive assembly 13 includes a servo motor 1301, a drive wheel 1302 driven by the servo motor, and a connecting rod 1303 coaxially arranged with the drive wheel. The output end of the servo motor 1301 is mounted on the drive wheel 1302 through a drive shaft. The connecting rod 1303 is fixed in the middle of one side of the drive wheel 1302. The connecting rod 1303 extends horizontally along the axial direction, and a drive wheel 11 is provided at its other end. In this embodiment, the length of the connecting rod 1303 is greater than the overall length of the transition frame 2, auxiliary frame 3, test frame 4, and auxiliary frame 5 to ensure that the drive wheel 11 can extend to the outside of the auxiliary frame 5. A guide shaft 10 is connected in the middle of one side of the drive wheel 11. An inclined plate 9 is rotatably arranged on the outside of the guide shaft 10. One side of the inclined plate 9 is fixedly connected to the outer wall of the auxiliary frame 5. The guide shaft 10 and the inclined plate 9 form a rotating pair to limit the radial runout of the drive wheel 11.

[0042] At the same time, such as Figure 2 , Figure 3 and Figure 5 As shown, a transmission gear 8 is meshed on one side of the outer surface of the drive wheel 1302, and a transmission gear 12 is meshed on one side of the outer surface of the drive wheel 11. The transmission gear 8 and transmission gear 12 are respectively connected to two sets of adjusting components 14; specifically, as shown... Figure 4 As shown, each set of adjustment components 14 includes a threaded rod 1401 and a connecting sleeve 1402 threaded onto the threaded rod. The threaded rod 1401 is coaxially fixed with the corresponding transmission gear. A connecting rod 1403 passes through the inside of the connecting sleeve 1402. One end of the connecting rod 1403 is fixed to the connecting sleeve 1402, and the other end is fixedly connected to the auxiliary component 15. The two sets of adjustment components 14 are symmetrically arranged on both sides of the test frame 4, and correspond to the auxiliary frame 3 and the auxiliary frame 5, respectively.

[0043] Please refer to the following: Figure 4The aforementioned auxiliary component 15 includes a first sealing element 1501, a second sealing element 1504, and a third sealing element 1506 arranged sequentially. All three sealing elements are plate-shaped structures, and sealing rubber pads are bonded to their outer surfaces. Each sealing element is slidably disposed inside the transition frame 2, auxiliary frame 1 3, test frame 4, and auxiliary frame 2 5 to form a dynamic seal. The first seal 1501 and the second seal 1504 are fixedly connected by a mounting post 1502. Specifically, one end of the mounting post 1502 is fixed to the first seal 1501, and the other end is fixed to the second seal 1504 by bolts. A spacing adjustment structure is provided between the second seal 1504 and the third seal 1506. The spacing adjustment structure includes an outer screw 1503 and an inner screw 1505. The outer screw 1503 is threaded onto the outer surface of one side of the second seal 1504, and the inner screw 1505 is threaded into the interior of the outer screw 1503 and can extend and retract relative to it. The end of the inner screw 1505 is rotatably connected to the third seal 1506. By rotating the outer screw 1503 or the inner screw 1505, the axial distance between the second seal 1504 and the third seal 1506 can be precisely changed, thereby forming a variable space to accommodate the rock sample.

[0044] In this embodiment, the rock sample to be tested is first placed between the first seal 1501 and the second seal 1504 (i.e., the side of the second seal 1504 facing away from the third seal 1506) by manually opening the threaded cover 6 at the top of the auxiliary frame 3. Alternatively, depending on the sample size, the rock sample is clamped between the second seal 1504 and the third seal 1506 by adjusting the outer screw 1503 and the inner screw 1505. After closing the threaded cover 6, the pressure generating unit 18 is activated to inject compressed air into the test frame 4 to the target pressure value. Then, the servo motor 1301 is activated, driving the drive wheel 1302 to rotate. Through the connecting rod 1303, the drive wheel 11 rotates synchronously, thereby driving the transmission gear 8 and the transmission gear 12 to rotate, causing the threaded rods 1401 on both sides to rotate simultaneously, driving the connecting sleeve 1402 and the connecting rod 1403 to move horizontally along the axial direction. Connecting rod 1403 pushes auxiliary component 15 to move as a whole, pushing the rock sample from auxiliary frame 3 or auxiliary frame 5 to the high-pressure area in the center of test frame 4 for damage mechanics testing. After the test is completed, servo motor 1301 rotates in the reverse direction, and auxiliary component 15 brings the rock sample back to below the threaded cover 6 of the original auxiliary frame. At this time, the high pressure in test frame 4 does not need to be depressurized; the sample can be taken out directly by opening threaded cover 6 and the next sample can be placed in to continue testing. Throughout the transfer process, the pressure in test frame 4 is completely maintained because the sealing rubber gasket of the seal is always in elastic contact with the inner wall of each frame.

[0045] In addition, the interior of the outer frame 1 is hollow and contains water, and a monitoring component 19 is installed on one side of the interior of the outer frame 1; such as Figure 6As shown, the monitoring component 19 includes a mounting plate 1901, a fixing plate 1902, an adjusting screw 1903, a base plate 1904, and a liquid level alarm 1905. The mounting plate 1901 is fixed to the inner wall of the outer frame 1, and the fixing plate 1902 is mounted on the mounting plate 1901. The adjusting screw 1903 is threaded through the fixing plate 1902, and its lower end is fixed to the base plate 1904. The liquid level alarm 1905 is mounted on the base plate 1904. The height of the liquid level alarm 1905 can be changed by rotating the adjusting screw 1903. When a leak occurs in the test frame 4, high-pressure gas enters the water inside the outer frame 1, generating bubbles and causing liquid level fluctuations. The liquid level alarm 1905 detects that the liquid level change exceeds a set threshold and issues an alarm signal.

[0046] Example 2

[0047] The main difference between Embodiment 2 and Embodiment 1 is that only one auxiliary frame is set up, connected to one side of the test frame 4, which is suitable for test scenarios with unidirectional sample injection or limited space. Specifically, the auxiliary frame 2 and its corresponding transition frame 2 are omitted, and only the transition frame 2 and the auxiliary frame 3 on one side of the test frame 4 are retained. The drive assembly 13 is only set on one side of the auxiliary frame 3 and only includes one set of adjustment components 14. The drive wheel 1302 directly drives the set of adjustment components 14 through the transmission gear 8, and the connecting rod 1303, the drive wheel 11 and the transmission gear 12 on the other side are no longer provided.

[0048] The auxiliary component 15 also includes a first seal 1501, a second seal 1504, and a third seal 1506, as well as an external screw 1503 and an internal screw 1505 connecting the second seal 1504 and the third seal 1506. The first seal 1501 and the second seal 1504 are fixedly connected by a mounting post 1502, but the side of the first seal 1501 facing away from the test frame 4 no longer has a symmetrical fit with the third seal 1506; instead, the variable space formed by the second seal 1504 and the third seal 1506 serves as the sole rock sample receiving area. The adjustment component 14 includes a threaded rod 1401 and a connecting sleeve 1402. The threaded rod 1401 is fixedly connected to the transmission gear 8, and the connecting sleeve 1402 is fixed to the first seal 1501 via the connecting rod 1403. When the servo motor 1301 drives the drive wheel 1302 to rotate, it drives the threaded rod 1401 to rotate through the transmission gear 8, causing the connecting sleeve 1402 and the connecting rod 1403 to move horizontally, thereby pushing the entire auxiliary assembly 15 to move axially along the test frame 4, sending the rock sample between the second seal 1504 and the third seal 1506 into the test frame 4, or retracting it from the test frame 4 to below the threaded cover 6 of the auxiliary frame 3.

[0049] The remaining structures (including the pressure generating unit 18, the liquid containment chamber inside the outer frame 1, the monitoring component 19, the sealing rubber gasket, etc.) are the same as in Embodiment 1. This embodiment can also achieve unilateral transfer and replacement of rock samples while maintaining the high pressure state inside the test frame 4, and the spacing adjustment structure can adapt to samples of different sizes, thereby reducing the manufacturing cost and space requirements of the device.

[0050] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A rock damage mechanics testing device under high pressure, comprising an outer frame (1) and a test frame (4) disposed within the outer frame (1), and a pressure generating unit (18) that forms a pressure chamber inside the test frame (4), characterized in that, Also includes: At least one auxiliary frame is connected to at least one side of the test frame (4); The driving component (13) is located outside the test frame (4); The adjustment component (14) is connected to the drive component (13) in a transmission manner; An auxiliary component (15) is connected to the adjustment component (14) and is slidably and sealed inside the auxiliary frame and the test frame (4); The auxiliary component (15) includes at least two seals and a spacing adjustment structure connected between adjacent seals for changing the space size for accommodating the rock sample between adjacent seals; the drive component (13) drives the auxiliary component (15) to move axially through the adjustment component (14) to transfer the rock sample between the test frame (4) and the auxiliary frame, and maintain the pressure state within the test frame (4) during the transfer.

2. The rock damage mechanics testing device under high pressure environment according to claim 1, characterized in that, The auxiliary component (15) includes a first seal (1501), a second seal (1504) and a third seal (1506) arranged in sequence. The spacing adjustment structure includes an outer screw (1503) and an inner screw (1505) disposed between the second seal (1504) and the third seal (1506). The inner screw (1505) is threadedly connected to the inside of the outer screw (1503) and can extend and retract relative to it.

3. The rock damage mechanics testing device under high pressure environment according to claim 1, characterized in that, The drive assembly (13) includes a power source (1301), a drive wheel (1302) driven by the power source, and a connecting rod (1303) coaxially arranged with the drive wheel. The other end of the connecting rod (1303) is provided with a drive wheel (11). The drive wheel (1302) and the drive wheel (11) are respectively connected to two sets of adjustment assemblies (14) for transmission.

4. The rock damage mechanics testing device under high pressure environment according to claim 3, characterized in that, The adjustment component (14) includes a threaded rod (1401) and a connecting sleeve (1402) threaded thereon. The threaded rod (1401) is connected to the drive component (13) in a transmission manner, and the connecting sleeve (1402) is fixedly connected to the auxiliary component (15) through a connecting rod (1403).

5. The rock damage mechanics testing device under high pressure environment according to claim 3, characterized in that, The test frame (4) has a set of transition frames (2) on both sides. The outer side of the transition frames (2) is connected to auxiliary frame one (3) and auxiliary frame two (5). The driving component (13) and the adjustment component (14) are located on one side of the auxiliary frame one (3) and / or auxiliary frame two (5).

6. The rock damage mechanics testing device under high pressure environment according to claim 5, characterized in that, A guide shaft (10) is connected to the middle of one side of the drive wheel (11). An inclined plate (9) is rotatably provided on the outside of the guide shaft (10). The auxiliary frame two (5) is fixedly connected to one side of the inclined plate (9). The length of the connecting rod (1303) is greater than the length of the transition frame (2), the auxiliary frame one (3), the test frame (4), and the auxiliary frame two (5).

7. The rock damage mechanics testing device under high pressure environment according to claim 1, characterized in that, The outer surface of the seal is provided with a sealing rubber pad. The seal is slidably disposed inside the auxiliary frame, the transition frame (2) and the test frame (4) respectively, so as to maintain pressure isolation between the frames during movement.

8. The rock damage mechanics testing device under high pressure environment according to claim 1, characterized in that, The top of the auxiliary frame is provided with an openable threaded cover (6).

9. The rock damage mechanics testing device under high pressure environment according to claim 1, characterized in that, The outer frame (1) is hollow inside and is used to contain liquid. The inner side of the outer frame (1) is also provided with a monitoring component (19) for detecting the sealing of the test frame (4).

10. The rock damage mechanics testing device under high pressure environment according to claim 9, characterized in that, The monitoring component (19) includes a liquid level alarm (1905) and an adjustment structure for adjusting the height of the liquid level alarm (1905), the liquid level alarm (1905) being used to respond to changes in the liquid level inside the outer frame (1).

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