Leveling device for rock triaxial compression test
By using a combination of bubble level and laser leveling set in the rock triaxial compression test device, the problems of long time and low accuracy caused by traditional relying on experience leveling are solved, and efficient and accurate leveling effect is achieved, and the reliability of test data is improved.
Patent Information
- Application Number
- CN202421323403.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-06-11
AI Technical Summary
The existing rock triaxial compression test device relies on the experience of testers when leveling the sensor, resulting in a long leveling time and limited accuracy due to individual level, affecting data accuracy.
The leveling device including a bubble level and a laser leveling group is adopted. The bubble leveling group is roughly adjusted and the laser leveling group is fine-tuned to ensure the leveling of the fixed bracket, combined with the flat rod to detect parallelism, improve leveling efficiency and accuracy.
The leveling operation is simplified, the leveling time is shortened, the accuracy and accuracy of the test data of the rock triaxial compression test is improved, and the dependence on the experience of the tester is reduced.
Smart Images
Figure CN223091660U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rock mechanics and engineering, and particularly relates to a leveling device for a rock triaxial compression test. Background Technique
[0002] In the field of civil engineering, a rock triaxial compression test device can provide a stress state simulation closer to the actual engineering environment, so as to more accurately evaluate the mechanical properties of rocks. This test method can not only obtain the basic mechanical parameters of rocks, such as compressive strength, elastic modulus and Poisson's ratio, but also deeply study the deformation and failure characteristics of rocks under different pressure environments, providing a scientific basis for the design of engineering structures under high-pressure environments. The data obtained therefrom enables engineers to design safe and economical structural solutions, effectively prevent geological disasters, enhance engineering stability, and also promote the development of rock mechanics theory. Therefore, the application of the triaxial compression test device greatly improves the safety and economic benefits of civil engineering and is an important tool indispensable in rock mechanics research and engineering practice.
[0003] During the use of a rock triaxial compression test device, an axial sensor needs to be fixed through upper and lower circular ring fixing brackets. The circular ring fixing brackets are closely connected to the rock specimen, and the displacement of the upper and lower circular ring fixing brackets represents the compression amount of the specimen. Therefore, in order to ensure the accuracy of the rock triaxial compression test, before connecting the pressure chamber to the test base for loading, it is necessary to ensure that the two circular ring fixing brackets are horizontal and there is no relative dislocation, and the two axial sensors will not be skewed, so as to obtain accurate relevant parameters such as the compressive strength and deformation characteristics of the rock specimen.
[0004] The existing sensor leveling methods mainly rely on the experience of testers for manual leveling, but this places high requirements on testers, and the leveling time is long. At the same time, the leveling effect by testers relying on experience is limited by individual levels and states, which has a great impact on the accuracy of data. Content of the Utility Model
[0005] The main purpose of the utility model is to propose a leveling device for a rock triaxial compression test that can level efficiently.
[0006] To achieve the above object, the utility model proposes a leveling device for a rock triaxial compression test, and the leveling device for a rock triaxial compression test includes:
[0007] A fixing component, including a first fixing bracket and a second fixing bracket that are sequentially spaced apart in the up and down direction. The first fixing bracket and the second fixing bracket are respectively arranged in a circular ring shape for accommodating and fixing a rock specimen; and,
[0008] The leveling assembly includes at least two first bubble levels and at least one laser leveling group. One of the two first bubble levels is arranged on the first fixed bracket and is parallel to the end face of the first fixed bracket, and the other is arranged on the second fixed bracket and is parallel to the end face of the second fixed bracket. The laser leveling group includes a laser emitter and a laser receiving target. The laser emitter is arranged on the first fixed bracket for emitting a laser signal downward, and the laser receiving target is arranged on the upper end face of the second fixed bracket corresponding to the laser emitter.
[0009] Optionally, there are two leveling holes respectively penetrating through the first fixed bracket and the second fixed bracket in the up-down direction, and the two leveling holes on each fixed bracket are symmetrically arranged along the axis of the fixed bracket. The two leveling holes on the first fixed bracket are arranged in one-to-one correspondence with the two leveling holes on the second fixed bracket;
[0010] The leveling device for the rock triaxial compression test further includes a leveling component. The leveling component includes at least two leveling rods. The two leveling rods can move relative to the fixed component and can be inserted into the first fixed bracket and the second fixed bracket respectively through the two corresponding leveling holes in the up-down direction.
[0011] Optionally, the leveling assembly further includes at least two second bubble levels. One of the two second bubble levels is arranged on the first fixed bracket, and the other is arranged on the second fixed bracket;
[0012] The first bubble level and the second bubble level arranged on the same fixed bracket are respectively arranged on both sides of the axis of the fixed bracket and are perpendicularly arranged to each other.
[0013] Optionally, a plurality of first positioning members are arranged on the first fixed bracket. The plurality of first positioning members are spaced apart along the circumferential direction of the first fixed bracket, and the fixed ends of the first positioning members extend radially into the inner ring of the first fixed bracket along the radial direction of the first fixed bracket to fix the upper end of the rock sample;
[0014] A plurality of second positioning members are arranged on the second fixed bracket. The plurality of second positioning members are spaced apart along the circumferential direction of the second fixed bracket, and the fixed ends of the second positioning members extend radially into the inner ring of the first fixed bracket along the radial direction of the second fixed bracket to fix the rock sample.
[0015] Optionally, the first positioning member includes a first bolt, and the lengths of the plurality of first bolts extending into the inner ring of the first fixed bracket are the same;
[0016] The second positioning member includes a second bolt, and the lengths of the plurality of second bolts extending into the inner ring of the second fixed bracket are the same.
[0017] Optionally, positioning pieces are respectively sleeved on the outer perimeters of the first bolt and the second bolt to define the number of turns that the first bolt and the second bolt can be screwed into the thread rings of the fixing bracket.
[0018] Optionally, a first mounting hole is formed in the first fixing bracket, and the laser emitter is accommodated in the first mounting hole;
[0019] A fixing screw is inserted into the first fixing bracket, and the fixing screw is inserted into the first mounting hole along the radial direction of the first fixing bracket to jointly clamp and fix the laser emitter with the inner wall of the first mounting hole.
[0020] Optionally, the laser receiving target includes three concentric circles and two straight lines, the two straight lines are vertically arranged, and the foot of the perpendicular of the two straight lines coincides with the center of the concentric circles.
[0021] Optionally, there are two laser leveling groups, and the two laser leveling groups are symmetrically arranged along the axis of the first fixing bracket.
[0022] Optionally, a second mounting hole penetrates through the first fixing bracket in the up-and-down direction, a third mounting hole penetrates through the second fixing bracket in the up-and-down direction, and the second mounting hole and the third mounting hole are arranged corresponding to each other in the up-and-down direction for jointly mounting a sensor assembly.
[0023] In the technical solution of the present utility model, the leveling device for the rock triaxial compression test includes a fixing assembly and a leveling assembly. The leveling assembly includes at least two first bubble levels and at least one laser leveling group. The first bubble levels are provided on both the first fixing bracket and the second fixing bracket. By observing the position of the water bubble in the first bubble level, it can be judged whether the fixing bracket is tilted. Furthermore, the horizontal state of the first fixing bracket and the second fixing bracket can be roughly adjusted according to the position of the water bubble in the first bubble level until the water bubble in the first bubble level on the fixing bracket is in the middle. Further, a laser emitter is provided on the first fixing bracket, and a laser receiving target is provided on the upper end surface of the second fixing bracket. By observing whether the laser emitted by the laser emitter shoots at the exact center of the laser receiving target, it can be judged whether the fixing bracket is tilted. Furthermore, the horizontal state of the first fixing bracket and the second fixing bracket can be finely adjusted according to the position where the laser is projected on the laser receiving target; thus, by leveling the fixing bracket twice through the leveling assembly, the leveling effect can be improved, which is beneficial to improving the accuracy of the test data of the rock triaxial compression test. At the same time, compared with the experimenter leveling by relying on experience, the leveling time can be greatly shortened, and the operation is simple and convenient. Description of the Drawings
[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.
[0025] Figure 1 It is a schematic structural diagram of an embodiment of a leveling device for rock triaxial compression test provided by the present invention;
[0026] Figure 2 For Figure 1 It is a partial structural schematic diagram of the leveling device for rock triaxial compression test in
[0027] Figure 3 For Figure 1 It is a schematic structural diagram of the first positioning member of the leveling device for rock triaxial compression test in
[0028] Explanation of the reference numerals in the drawings:
[0029]
[0030] The realization of the object, functional characteristics and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the drawings. Detailed embodiments
[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.
[0032] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.
[0033] In addition, if the descriptions such as "first" and "second" are involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0034] In the field of civil engineering, a rock triaxial compression test device can provide a stress state simulation closer to the actual engineering environment, thereby more accurately evaluating the mechanical properties of rocks. This test method can not only obtain the basic mechanical parameters of rocks, such as compressive strength, elastic modulus, and Poisson's ratio, but also deeply study the deformation and failure characteristics of rocks under different pressure environments, providing a scientific basis for the design of engineering structures in high-pressure environments. The data obtained therefrom enables engineers to design safe and economical structural solutions, effectively prevent geological disasters, enhance engineering stability, and also promote the development of rock mechanics theory. Therefore, the application of the triaxial compression test device greatly improves the safety and economic benefits of civil engineering and is an essential tool in rock mechanics research and engineering practice.
[0035] During the use of a rock triaxial compression test device, the axial sensor needs to be fixed by upper and lower ring fixing brackets. The ring fixing brackets are closely connected to the rock specimen, and the displacement of the upper and lower ring fixing brackets represents the compression amount of the specimen. Therefore, in order to ensure the accuracy of the rock triaxial compression test, before connecting the pressure chamber to the test base for loading, it is necessary to ensure that the two ring fixing brackets are horizontal and there is no relative dislocation, and the two axial sensors will not be skewed, so as to obtain accurate relevant parameters such as the compressive strength and deformation characteristics of the rock specimen.
[0036] The existing sensor leveling methods mainly rely on the experience of the test personnel for manual leveling, but this places high requirements on the test personnel, and the leveling time is relatively long. At the same time, the leveling effect by the test personnel relying on experience is limited by the individual level and state, which has a greater impact on the accuracy of the data.
[0037] In view of this, the present utility model provides a leveling device 100 for a rock triaxial compression test. Figures 1 to 3 This is an embodiment of the leveling device 100 for a rock triaxial compression test provided by the present utility model.
[0038] Please refer to Figures 1 to 3 Figures 1 to 3 , the leveling device 100 for rock triaxial compression test includes a fixing component 1 and a leveling component 2. The fixing component 1 includes a first fixing bracket 11 and a second fixing bracket 12 which are sequentially and spaced apart in the up and down direction. The first fixing bracket 11 and the second fixing bracket 12 are respectively arranged in a circular ring shape for accommodating and fixing a rock specimen. The leveling component 2 includes at least two first bubble levels 21 and at least one laser leveling group 22. One of the two first bubble levels 21 is arranged on the first fixing bracket 11 and is parallel to the end face of the first fixing bracket 11. The other of the two first bubble levels 21 is arranged on the second fixing bracket 12 and is parallel to the end face of the second fixing bracket 12. The laser leveling group 22 includes a laser emitter 221 and a laser receiving target 222. The laser emitter 221 is arranged on the first fixing bracket 11 for emitting laser downward. The laser receiving target 222 is correspondingly arranged on the upper end face of the second fixing bracket 12 opposite to the laser emitter 221.
[0039] In the technical solution of the present invention, the leveling device 100 for rock triaxial compression test includes a fixing component 1 and a leveling component 2. The leveling component 2 includes at least two first bubble levels 21 and at least one laser leveling group 22. The first bubble levels 21 are arranged on both the first fixing bracket 11 and the second fixing bracket 12. By observing the position of the bubble in the first bubble level 21, it can be judged whether the fixing bracket is tilted. Furthermore, the horizontal state of the first fixing bracket 11 and the second fixing bracket 12 can be adjusted according to the position of the bubble in the first bubble level 21. When the bubble in the first bubble level 21 on the fixing bracket is in the middle, the fixing bracket is in a horizontal state. Further, a laser emitter 221 is arranged on the first fixing bracket 11, and a laser receiving target 222 is arranged on the second fixing bracket 12. By observing whether the laser emitted by the laser emitter 221 shoots at the exact center of the laser receiving target 222, it can be judged whether the fixing bracket is tilted. Furthermore, the horizontal state of the first fixing bracket 11 and the second fixing bracket 12 can be finely adjusted according to the position where the laser is projected on the laser receiving target 222. In this way, by leveling the fixing bracket twice through the leveling component 2, the leveling effect can be improved, which is beneficial to improving the accuracy of the test data of the rock triaxial compression test. At the same time, compared with the tester leveling by experience, the leveling time can be greatly shortened, and the operation is simple and convenient.
[0040] It should be noted that in the present invention, the number of the laser leveling groups 22 is not limited. It can be one, or two, three, etc. Specifically, please refer to Figure 1 andFigure 2 In one embodiment of the utility model, two laser leveling groups 22 are provided, and the two laser leveling groups 22 are symmetrically arranged along the axis of the first fixed bracket 11, so as to further improve the leveling efficiency.
[0041] For further information, see Figure 1 and Figure 2 The first fixed bracket 11 and the second fixed bracket 12 respectively have two leveling holes 5 penetrating in the up-down direction, and the two leveling holes 5 on each fixed bracket are symmetrically arranged along the axis of the fixed bracket, and the two leveling holes 5 on the first fixed bracket 11 are arranged one-to-one with the two leveling holes 5 on the second fixed bracket 12; the leveling device 100 for rock triaxial compression test also includes a leveling component 3, and the leveling component 3 includes at least two leveling rods 31, and the two leveling rods 31 can move relative to the fixed component 1, and can be inserted into the first fixed bracket 11 and the second fixed bracket 12 in sequence through the two corresponding leveling holes 5 in the up-down direction.
[0042] In this way, after the first fixed bracket 11 and the second fixed bracket 12 are leveled by the leveling component 2, the leveling effect of the first fixed bracket 11 and the second fixed bracket 12 can also be detected by the leveling component 3, that is, the two leveling rods 31. If the leveling rods 31 can be inserted into the first fixed bracket 11 and the second fixed bracket 12 in sequence along the up and down directions, the first fixed bracket 11 and the second fixed bracket 12 are parallel to each other and there is no misalignment, and the leveling is completed. Otherwise, the leveling fails, and the first fixed bracket 11 and the second fixed bracket 12 are continued to be leveled by the leveling component 2. Therefore, the leveling effect can be further improved, thereby improving the accuracy of the test data of the rock triaxial compression test.
[0043] For details, please refer to Figure 1 and Figure 2 The first leveling component 2 also includes at least two second bubble levels 23, one of which is arranged on the first fixed bracket 11, and the other is arranged on the second fixed bracket 12; the first bubble level 21 and the second bubble level 23 arranged on the same fixed bracket are arranged on both sides of the axis of the fixed bracket and are arranged perpendicular to each other.
[0044] For details, please refer to Figure 1 and Figure 2, a plurality of first positioning members 13 are provided on the first fixing bracket 11, and the plurality of first positioning members 13 are circumferentially spaced apart along the first fixing bracket 11, and the fixed ends of the first positioning members 13 extend radially into the inner ring of the first fixing bracket 11 along the first fixing bracket 11 to fix the upper end of the rock sample; a plurality of second positioning members 14 are provided on the second fixing bracket 12, and the plurality of second positioning members 14 are circumferentially spaced apart along the second fixing bracket 12, and the fixed ends of the second positioning members 14 extend radially into the inner ring of the second fixing bracket 12 along the second fixing bracket 12 to fix the lower end of the rock sample.
[0045] It should be noted that in the present invention, the number of the first positioning members 13 and the second positioning members 14 is not limited, and can be two, three, four or more. Specifically, in an embodiment of the present invention, both the first positioning members 13 and the second positioning members 14 are provided with three, and the three first positioning members 13 are evenly circumferentially spaced apart along the first fixing bracket 11, and the three second positioning members 14 are evenly circumferentially spaced apart along the first fixing bracket 11.
[0046] Further, the first positioning member 13 includes a first bolt 131, and the lengths of the plurality of first bolts 131 extending into the inner ring of the first fixing bracket 11 are the same; the second positioning member 14 includes a second bolt, and the lengths of the plurality of second bolts extending into the inner ring of the second fixing bracket 12 are the same. In this way, the rock sample is stressed at the center of the fixing bracket, avoiding the rock sample deviating from the center of the fixing bracket due to asymmetric bolt installation.
[0047] Further, please refer to Figure 3 , positioning pieces 132 are respectively sleeved on the outer circumferences of the first bolt 131 and the second bolt to limit the number of turns of the first bolt 131 and the second bolt that can be screwed into the thread of the fixing bracket; in this way, it is possible to prevent the tester from rotating the first bolt 131 and the second bolt too much or too little.
[0048] Of course, in another embodiment of the present invention, the length of the bolt extending into the inner ring of the fixing bracket can be controlled by adding gaskets between the nut of the bolt and the outer wall of the fixing bracket. Further, the extending length of the bolt can be adjusted by adjusting the number or thickness of the gaskets.
[0049] Specifically, please refer to Figure 1 and Figure 2, a first mounting hole 111 is formed in the first fixing bracket 11, and the laser emitter 221 is disposed in the first mounting hole 111; a fixing screw 4 is inserted into the first fixing bracket 11, and the fixing screw 4 is inserted into the first mounting hole 111 along the radial direction of the first fixing bracket 11 to jointly clamp and fix the laser emitter 221 with the inner wall of the first mounting hole 111; thus, by rotating the fixing screw 4, the fixing force on the laser emitter 221 is adjusted to jointly and firmly clamp the laser emitter 221 with the inner wall of the first fixing bracket 11, improving the installation stability of the laser emitter 221 and preventing the laser emitter 221 from moving and affecting the leveling effect.
[0050] Specifically, the laser receiving target includes three concentric circles and two straight lines. The two straight lines are vertically arranged, and the foot of the perpendicular of the two straight lines coincides with the center of the concentric circles; thus, the center of the concentric circles is the exact center of the laser receiving target.
[0051] Specifically, please refer to Figure 1 and Figure 2 , a second mounting hole 112 penetrates through the first fixing bracket 11 in the up and down direction, a third mounting hole 121 penetrates through the second fixing bracket 12 in the up and down direction, and the second mounting hole 112 and the third mounting hole 121 are arranged corresponding to each other in the up and down direction for jointly mounting the sensor assembly 200.
[0052] Specifically, the sensor assembly 200 includes an axial sensor 201 and a sensing receiver 202. The axial sensor 201 is disposed in the second mounting hole 112, and the sensing receiver 202 is disposed in the third mounting hole 121. When the first fixing bracket 11 and the second fixing bracket 12 are adjusted to be parallel to each other without misalignment, the axial sensor 201 will not be skewed, and thus accurate relevant parameters such as the compressive strength and deformation characteristics of the rock specimen can be obtained.
[0053] The present utility model further provides a usage method of the leveling device for rock triaxial compression test described above. The usage method of the leveling device for rock triaxial compression test includes the following steps:
[0054] Step S1: Place the rock specimen in the second fixing bracket.
[0055] Step S2: Adjust the second fixing bracket according to the position of the bubble in the first level bubble of the second fixing bracket until the bubble is located in the middle of the first level bubble.
[0056] In this step, the second fixing bracket is roughly adjusted according to the first level bubble.
[0057] Step S3: Fix the lower end of the rock specimen.
[0058] In this step, specifically, a plurality of second positioning members are screwed into the inner ring of the second fixing bracket to jointly fix the lower end of the rock specimen.
[0059] Step S4: Sleeve the first fixing bracket on the outer periphery of the rock specimen and position it above the second fixing bracket.
[0060] Step S5: Adjust the first fixing bracket according to the position of the bubble in the first level bubble of the first fixing bracket and the position where the laser beam emitted by the laser emitter in the laser leveling group hits the laser receiving target until the bubble is in the middle of the first level bubble and the laser beam hits the center of the laser receiving target.
[0061] In this step, rough adjustment is performed through the first level bubble, and fine adjustment is performed through the laser leveling group to ensure the leveling effect.
[0062] Step S6: Fix the upper end of the rock specimen.
[0063] In this step, specifically, a plurality of first fixing members are screwed into the first fixing bracket to jointly fix the upper end of the rock specimen.
[0064] Further, after step S6, it further includes:
[0065] Step S7: Detect whether the first fixing bracket and the second fixing bracket are parallel and without misalignment through two leveling rods.
[0066] Step S8: If the detection result is yes, the leveling is completed; if the detection result is no, screw out a plurality of the first positioning members and a plurality of the second positioning members from the fixing bracket, and repeat steps S2 - S7.
[0067] Further, step S7 specifically includes:
[0068] Insert the leveling rod into the first fixing bracket through the leveling hole of the first fixing bracket and observe whether the leveling rod can continue to be inserted into the second fixing bracket through the leveling hole of the second fixing bracket.
[0069] In this step, if the leveling rod can be smoothly inserted into the second fixing bracket, the first fixing bracket and the second fixing bracket are parallel and without misalignment, that is, the detection result is yes and the leveling is completed.
[0070] The usage method of the leveling device for the rock triaxial compression test provided by the present utility model does not require the tester to rely on experience for leveling. The operation is simple and convenient, which can greatly shorten the leveling time of the tester and improve the leveling efficiency.
[0071] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made by using the specification and drawings of the present utility model under the inventive concept of the present utility model, or direct / indirect application in other related technical fields shall be included within the patent protection scope of the present utility model.
Claims
1. A leveling device for a rock triaxial compression test, characterized in that, The leveling device for the rock triaxial compression test includes: A fixing component, including a first fixing bracket and a second fixing bracket which are spaced apart in the vertical direction in sequence. The first fixing bracket and the second fixing bracket are respectively arranged in a circular ring shape for accommodating and fixing a rock specimen; and, A leveling component, including at least two first bubble levels and at least one laser leveling group. One of the two first bubble levels is arranged on the first fixing bracket and is parallel to the end face of the first fixing bracket, and the other is arranged on the second fixing bracket and is parallel to the end face of the second fixing bracket. The laser leveling group includes a laser emitter and a laser receiving target. The laser emitter is arranged on the first fixing bracket for emitting a laser signal downward, and the laser receiving target is arranged corresponding to the laser emitter on the upper end face of the second fixing bracket.
2. The leveling device for the triaxial compression test of rocks according to claim 1, wherein There are two leveling holes respectively penetrating through the first fixing bracket and the second fixing bracket in the vertical direction, and the two leveling holes on each fixing bracket are symmetrically arranged along the axis of the fixing bracket. The two leveling holes on the first fixing bracket are arranged in one-to-one correspondence with the two leveling holes on the second fixing bracket; The leveling device for the rock triaxial compression test further includes a leveling component. The leveling component includes at least two leveling rods. The two leveling rods can move relative to the fixing component and can be inserted into the first fixing bracket and the second fixing bracket respectively through the two corresponding leveling holes in the vertical direction in sequence.
3. The leveling device for the triaxial compression test of rocks according to claim 1, characterized in that, The leveling component further includes at least two second bubble levels. One of the two second bubble levels is arranged on the first fixing bracket, and the other is arranged on the second fixing bracket; The first bubble level and the second bubble level arranged on the same fixing bracket are respectively arranged on both sides of the axis of the fixing bracket and are perpendicular to each other.
4. The leveling device for the triaxial compression test of rocks according to claim 1, characterized in that, A plurality of first positioning members are arranged on the first fixing bracket. The plurality of first positioning members are spaced apart along the circumferential direction of the first fixing bracket, and the fixed ends of the first positioning members extend radially into the inner ring of the first fixing bracket to fix the upper end of the rock specimen; A plurality of second positioning members are arranged on the second fixing bracket. The plurality of second positioning members are spaced apart along the circumferential direction of the second fixing bracket, and the fixed ends of the second positioning members extend radially into the inner ring of the first fixing bracket to fix the rock specimen.
5. The leveling device for the triaxial compression test of rocks according to claim 4, characterized in that, The first positioning member includes a first bolt, and the lengths of the plurality of first bolts extending into the inner ring of the first fixing bracket are the same; The second positioning member includes a second bolt, and the lengths of the plurality of second bolts extending into the inner ring of the second fixing bracket are the same.
6. The leveling device for the triaxial compression test of rocks according to claim 5, characterized in that, Positioning pieces are respectively sleeved on the outer circumferences of the first bolt and the second bolt to limit the number of turns of the first bolt and the second bolt that can be screwed into the thread of the fixing bracket.
7. The leveling device for the triaxial compression test of rocks according to claim 1, characterized in that, A first mounting hole is formed in the first fixing bracket, and the laser emitter is accommodated in the first mounting hole; The first fixing bracket is inserted with fixing screws, and the fixing screws are inserted into the first mounting holes along the radial direction of the first fixing bracket to jointly clamp and fix the laser emitter with the inner walls of the first mounting holes.
8. The leveling device for the triaxial compression test of rocks according to claim 1, characterized in that, The laser receiving target includes three concentric circles and two straight lines. The two straight lines are vertically arranged, and the foot of the perpendicular of the two straight lines coincides with the center of the concentric circles.
9. The leveling device for rock triaxial compression test according to claim 1, characterized in that, There are two laser leveling groups, and the two laser leveling groups are symmetrically arranged along the axis of the first fixing bracket.
10. The leveling device for the triaxial compression test of rocks according to claim 1, characterized in that, The first fixing bracket is penetrated with a second mounting hole in the up-and-down direction, the second fixing bracket is penetrated with a third mounting hole in the up-and-down direction, and the second mounting hole and the third mounting hole are arranged corresponding to each other in the up-and-down direction for jointly mounting the sensor assembly.