Rock sample testing device and testing method thereof

Abstract

The invention discloses a rock sample testing device and a testing method thereof, and relates to the technical field of civil engineering, the rock sample testing device comprises a machine base, an experiment structure and a fixing structure, the experiment structure comprises a heating furnace structure and an impact structure, and the heating furnace structure and the impact structure are both installed on the machine base in the first direction; the impact structure is arranged corresponding to the open end of the heating furnace structure, the fixing structure comprises a fixing part, the fixing part is arranged on the machine base on the side, away from the heating furnace structure, of the impact structure, and the fixing part has a movement stroke moving in the first direction; according to the technical scheme provided by the invention, the structure is simple, in the use process, the position stability of the sample in the test process can be ensured, the sample is fixed through the flexible part with relatively good plasticity, the influence on the rock sample in the crushing process can be reduced as much as possible, and the whole test device is reliable in structure and has relatively good application prospects.

Description

Technical Field

[0001] The invention relates to the technical field of civil engineering, and in particular to a rock sample testing device and a testing method thereof. Background Art

[0002] The Brazilian disk dynamic splitting test is of great significance for understanding the mechanical behavior of rock under dynamic loading conditions. This test method can not only help engineers better design and evaluate the safety of rock engineering structures, but also provide experimental data support for the development of rock mechanics theory. According to the latest research progress, the Brazilian disk dynamic splitting test has been widely used to study the dynamic mechanical properties of different types of rocks.

[0003] In the rock Brazilian disk dynamic splitting test, the sample must be placed in the middle of the incident rod and the transmission rod. At present, there is no sample fixing device, and it is placed manually by feeling. The sample may not be placed in the middle, which will lead to deviation in the experimental results. In addition, during the test, the sample may fall off, resulting in experimental failure. Summary of the invention

[0004] The main purpose of the present invention is to provide a rock sample testing device and a testing method thereof, aiming to solve the problem that in the traditional rock sample testing process, the sample is difficult to be effectively fixed, which affects the accuracy of the test results and the stability of the test process.

[0005] To achieve the above-mentioned purpose, the rock sample testing device proposed in the present invention comprises:

[0006] Machine base;

[0007] An experimental structure, comprising a heating furnace structure and an impact structure, wherein the heating furnace structure and the impact structure are both installed on the machine base along a first direction, and the impact structure is arranged corresponding to the opening end of the heating furnace structure; and

[0008] A fixing structure, comprising a fixing part, the fixing part is arranged on the base at a side of the impact structure away from the heating furnace structure, and the fixing part has a movement stroke along the first direction, and a flexible member is arranged on the fixing part, and the flexible member is used to fix the rock sample;

[0009] Wherein, the first direction is a horizontal direction.

[0010] In one embodiment, the fixing portion is configured as a fixing rod, and one end of the fixing rod is provided with a circular ring portion;

[0011] The flexible member is configured to be cylindrical and installed in the annular portion, and a limiting hole is provided on the flexible member along the second direction;

[0012] The second direction is arranged perpendicularly to the first direction on a horizontal plane, and two vertical inner walls of the limiting hole are arranged in an arc shape.

[0013] In one embodiment, the fixing structure further comprises a driving structure, which is arranged on the machine base at a side of the impact structure away from the heating furnace structure, and the driving structure is connected to one end of the fixing rod to adjust the horizontal position and vertical position of the fixing rod; and / or,

[0014] The outer ring of the flexible member is provided with a circle of limiting grooves corresponding to the annular portion; and / or,

[0015] Two arc-shaped convex parts are respectively arranged on both end surfaces of the flexible member at positions corresponding to the limiting holes, and the arc-shaped walls of the arc-shaped convex parts are connected to the arc-shaped inner walls of the limiting holes.

[0016] In one embodiment, the impact structure includes an impact structure and an abutment structure, the impact structure and the abutment structure are arranged on the machine base along the second direction, and a test area is formed between the abutment structure and the impact structure, the abutment structure is used to limit one side of the rock sample in the horizontal direction, and the output end of the impact structure corresponds to the abutment structure, so as to apply collision force to the rock sample.

[0017] In one embodiment, a plurality of mounting seats evenly spaced apart are provided on the base along the second direction;

[0018] The impact structure comprises:

[0019] an incident rod, mounted on the plurality of mounting seats on one side of the test area; and

[0020] An excitation device is installed on the machine base, and an output end of the excitation device is connected to an end of the incident rod away from the test area, so as to drive the incident rod to move along the second direction.

[0021] In one embodiment, the abutment structure comprises:

[0022] a transmission rod, mounted on the plurality of mounting seats on the other side of the test area corresponding to the incident rod; and

[0023] A second cylinder is installed at one end of the transmission rod away from the test area and connected to the transmission rod, and is used to adjust the horizontal position of the end of the transmission rod at the test area;

[0024] Wherein, a buffer structure is provided between the transmission rod and the output end of the second cylinder.

[0025] In one embodiment, an abutment block is provided on a peripheral wall of an end portion of the transmission rod away from the test area;

[0026] The buffer structure comprises:

[0027] A square frame mounted on the output end of the second cylinder;

[0028] A fixing block is installed on the inner side of the square frame, wherein a receiving groove is provided in the fixing block, and a flexible filler is provided in the receiving groove; and,

[0029] The absorption rod has one end portion disposed in the flexible filler, and the other end portion slides through the fixed block and the square frame and abuts against one end portion of the transmission rod.

[0030] In one embodiment, the heating furnace structure comprises:

[0031] A furnace body is installed on the machine base, and an opening of the furnace body is arranged corresponding to the test area; and

[0032] A furnace door structure is arranged on the machine base corresponding to the opening of the furnace body, and a square hole corresponding to the fixing rod is arranged on the furnace door structure. The furnace door structure is used to shield the opening of the furnace body.

[0033] The present invention further provides a rock sample testing method, which is applied to the above-mentioned rock sample testing device, and the rock sample testing method comprises:

[0034] Preheat the heating furnace and adjust the heating furnace temperature to the corresponding test temperature according to the type of rock sample;

[0035] Install the flexible member on the fixed rod, and install the rock sample on the flexible member so that the axis of the rock sample is located on a vertical plane;

[0036] The rock sample is placed into a heating furnace for heating by a driving structure;

[0037] After the rock sample is heated, the rock sample is transferred to the test area through the driving structure and immediately tested by the impact structure.

[0038] In one embodiment, after the rock sample is heated, the rock sample is transferred to a test area by a driving structure, and the rock sample is immediately tested by an impact structure, including:

[0039] Transferring the rock specimen to the testing area via the driving structure;

[0040] The incident rod and the transmission rod are driven to contact the arc-shaped wall of the rock sample respectively through the exciting device and the second cylinder;

[0041] The excitation device drives the incident rod to impact the rock sample and records the relevant experimental data through the storage device.

[0042] In the technical solution of the present invention, during the actual test, the fixed part moves in the first direction, so that the rock sample is placed in the heating furnace structure for heating, and then taken out and placed at the impact structure for impact, so as to obtain its dynamic tensile strength. In this process, the movement of the fixed part in the first direction replaces the manual material placement and material collection process, and the efficiency and stability are greatly improved. On the other hand, by fixing the sample with a flexible part with good plasticity, the impact on the rock sample crushing process can be reduced as much as possible, and the position stability during the sample testing process can be effectively guaranteed. In addition, the flexible part has the characteristics of high temperature resistance, can be assembled in advance, and continuously operated through the fixed part, which greatly reduces the intermediate time from taking out the high-temperature furnace structure to testing through the impact structure, thereby greatly improving the reliability of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0044] Figure 1 A schematic diagram of a top view of the structure of an embodiment of a rock sample testing device provided by the present invention;

[0045] Figure 2 A schematic diagram of a side view of the rock sample testing device provided by the present invention without the abutment structure;

[0046] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0047] Figure 4 for Figure 1 Schematic diagram of the installation and coordination between the middle installation rod and the flexible member;

[0048] Figure 5 for Figure 4 Schematic diagram of the structure of the flexible part;

[0049] Figure 6 for Figure 1 Structural diagram of the middle furnace door structure;

[0050] Figure 7 For application Figure 1 Schematic diagram of the test process of the rock sample testing device;

[0051] Figure 8 for Figure 7 Specific test flow chart of some test processes in the figure.

[0052] Description of Figure Numbers:

[0053] 100. Rock sample testing device; 1. Machine base; 2. Heating furnace structure; 21. Furnace body; 22. Furnace door structure; 221. Shield; 222. Rotating rod; 223. Strip hole; 224. Furnace door cylinder; 225. Connecting rod; 226. Protrusion structure; 3. Impact structure; 31. Impact structure; 312. Incident rod; 32. Abutment structure; 321. Second cylinder; 322. Transmission rod; 3221. Abutment block; 323. Buffer structure ; 3231, square frame; 3232, fixed block; 3233, accommodating groove; 3234, flexible filler; 3235, absorbing rod; 4, fixing structure; 41, fixing rod; 411, circular ring; 42, driving structure; 421, first linear guide assembly; 422, second linear guide assembly; 423, third cylinder; 4231, right angle plate; 5, flexible part; 51, limiting groove; 52, limiting hole; 53, arc-shaped protrusion; 6, mounting seat.

[0054] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0057] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0058] The Brazilian disk dynamic splitting test is of great significance for understanding the mechanical behavior of rock under dynamic loading conditions. This test method can not only help engineers better design and evaluate the safety of rock engineering structures, but also provide experimental data support for the development of rock mechanics theory. According to the latest research progress, the Brazilian disk dynamic splitting test has been widely used to study the dynamic mechanical properties of different types of rocks.

[0059] In the rock Brazilian disk dynamic splitting test, the sample must be placed in the middle of the incident rod and the transmission rod. At present, there is no sample fixing device, and it is placed manually by feeling. The sample may not be placed in the middle, which will lead to deviation in the experimental results. In addition, during the test, the sample may fall off, resulting in experimental failure.

[0060] The present invention provides a rock sample testing device 100 .

[0061] See also Figures 1 to 6In one embodiment of the present invention, the rock sample testing device 100 is used to test the dynamic tensile strength of the rock sample. The rock sample is usually a columnar sheet structure. In some test methods, when testing its dynamic tensile strength, it is necessary to preheat the rock sample, and then place the rock sample on an impact device for impact crushing, so as to measure the dynamic tensile strength of the current sample. Specifically, the bullet (excitation device) hits the incident rod, and a one-dimensional compressive stress wave will be formed at the impact end of the incident rod and propagate at the incident rod. When the incident wave propagates to the incident rod-specimen interface, part of the incident wave will be reflected back to the incident rod to form a reflected wave, and the rest will propagate along the specimen to the transmission rod to form a transmitted wave. The incident wave, the reflected wave and the transmitted wave are respectively collected by a pair of strain gauges attached to the middle of the rod and connected to a data acquisition device. During this process, it is necessary to ensure that the force direction of the impact device corresponds to the radial direction of the rock sample. In traditional tests, the rock sample is manually placed on the output end of the impact device. This manual placement method relies entirely on feeling. The rock sample may not be placed directly opposite the output end of the impact device, which will lead to deviations in the experimental results. In addition, during the test, the sample may fall off, resulting in experimental failure. Considering the above problems, in this embodiment, a fixed structure 4 is used to fix the rock sample. During the actual test, the fixed part drives the rock sample to move, thereby replacing manual material movement, which improves the efficiency of the test to a certain extent and makes the test process more stable. Specifically, an experimental structure is provided on the machine base 1, and the experimental structure includes a heating furnace structure 2 and an impact structure 3. The impact structure 3 is arranged on one side of the open end of the heating furnace structure 2, and the fixed structure 4, the impact structure 3 and the heating furnace structure 2 are arranged in sequence along a horizontal first direction on the upper end surface of the machine base 1. During the actual test, the fixed part moves in the first direction to place the rock sample in the heating furnace structure 2 for heating, and then takes it out and places it at the impact structure 3 for impact, so as to obtain its dynamic tensile strength. In this process, the movement of the fixed part in the first direction replaces the manual material placement and material collection process, and the efficiency and stability are greatly improved.On the other hand, considering that if the fixing part adopts the traditional hard contact fixing method with the rock sample, when the rock sample is impacted and broken, the hard contact fixing method will definitely interfere with the deformation generated during the rock sample crushing process, thereby affecting the accuracy of the experimental data, so in this embodiment, a flexible part 5 is provided on one end of the fixing part to fix the rock sample. In order to ensure the continuity of the test process, it is best to set the flexible part 5 to a high temperature resistant material so that it can meet the heating treatment in the heating furnace structure 2. Therefore, in this embodiment, the flexible part 5 is set to an insulating foam structure, which has good plasticity and can minimize the impact on the rock sample crushing process as much as possible. It also has high temperature resistance and can be assembled in advance. It can be continuously operated through the fixing part, which greatly reduces the intermediate time from taking out the high temperature furnace structure to testing through the impact structure 3, thereby greatly improving the reliability of the test results.

[0062] In addition, it can be imagined that the flexible part 5 has good plasticity and is easily deformed or damaged during the test process, so it is generally set as a disposable consumable. Since it is made of insulating foam and has small specifications, the cost can also be effectively controlled.

[0063] The fixing part is set as a fixing rod 41, and a circular ring part 411 is provided on one end of the fixing rod 41. The flexible member 5 is correspondingly set as a cylindrical structure, which can be installed on the inner side of the circular ring part 411 during installation, and a limiting hole 52 along the second horizontal direction is opened on the circular ring part 411. It should be noted that the first direction and the second direction are two directions perpendicular to each other on the horizontal plane, so after the rock sample is limitedly installed in the limiting hole 52, the axis of the rock sample can be ensured to be on the vertical plane. During the test, the output end of the impact structure 3 can impact the rock sample in the radial direction, so as to ensure the accuracy of the test results as much as possible. In order to further ensure the stability of the position of the rock sample after installation, the two vertical end faces of the limiting hole 52 are set as arc surfaces, and the curvature of the arc surface corresponds to the arc outer wall of the rock sample. Therefore, after the rock sample is placed in the limiting hole 52 , a sunken installation mode is formed in the horizontal direction of the rock sample, which can effectively limit the rock sample through the arc wall, thereby ensuring the stability of the position of the rock sample in the limiting hole 52 .

[0064] Among them, the position adjustment of the fixed rod 41 is an automatic adjustment structure, and the fixed structure 4 also includes a driving structure 42, and the driving structure 42 includes a first linear guide assembly 421, a second linear guide assembly 422 and a third cylinder 423. The first linear guide member is arranged along the second direction, and the second linear guide assembly 422 is arranged on the output end of the first linear guide assembly 421. The third cylinder 423 is arranged on the output end of the second linear guide assembly 422. The second linear guide assembly 422 can drive the third cylinder 423 to move in the first direction, thereby realizing the discharge and collection of materials by the fixed rod 41 at the heating furnace structure 2. A right-angle plate 4231 is provided on the output end of the third cylinder 423, and the fixed rod 41 is installed on the right-angle plate 4231. The third cylinder 423 can adjust the vertical height of the fixed rod 41. Therefore, the above structural setting can drive the circular ring portion 411 to adjust the horizontal and vertical positions. In the actual test process, the operation program of the above driving structure 42 can be set first, so as to automatically control through the corresponding program, thereby achieving efficient testing results.

[0065] In order to facilitate the limited installation of the flexible member 5 at the annular portion 411, a circle of limiting grooves 51 are provided on the outer ring of the flexible member 5 corresponding to the annular portion 411. When installing, the limiting grooves 51 are clamped on the annular portion 411 for installation, which can limit the position of the flexible member 5 and ensure the stability of its position. In order to further ensure the installation position of the rock sample, two arc-shaped protrusions 53 are provided on both end faces of the flexible member 5 corresponding to the position of the limiting hole 52. The arc-shaped wall of the arc-shaped protrusion 53 is connected to the arc-shaped inner wall of the limiting hole 52. Through the arrangement of the above structure, the contact force between the flexible member 5 and the rock sample can be increased, thereby further ensuring the limited installation effect of the rock sample on the flexible member 5.

[0066] Specifically, the impact structure 3 includes an impact structure member 31 and an abutment structure member 32, wherein the impact coupling member and the abutment structure member 32 are arranged along the second direction, and a test area is formed between the abutment structure member 32 and the impact structure member 31, and the abutment structure member 32 is used to limit one side of the rock sample in the horizontal direction, and the output end of the impact structure member 31 corresponds to the abutment structure member 32, so as to apply collision force to the rock sample.

[0067] Among them, a plurality of mounting seats 6 are evenly spaced along the second direction on the base 1, and a straight line formed by the plurality of mounting seats 6 passes through the test area. The impact structure 31 includes an incident rod 312 and an excitation device (not shown in the figure). In the actual test process, the abutment structure contacts the arc wall on one side of the rock sample. During this process, the excitation device synchronously drives the incident rod 312 to move slowly on the plurality of mounting seats 6 and contact the arc wall on the other side of the rock sample, thereby preliminarily positioning the rock sample. Then the excitation device performs the test work and drives the incident rod 312 to impact the rock sample. The traditional excitation device is a bullet-type impact structure, and the impact member hits one end of the incident rod 312, thereby breaking the rock sample through the incident rod 312, so the entire actual test process is completed instantaneously. In order to ensure the reliability of the sample data, the relative position of the abutment structure 32 and the incident rod 312 and the stability of the position of the rock sample are particularly important.

[0068] The abutment structure 32 is composed of a transmission rod 322 and a second cylinder 321. The transmission rod 322 is coaxially arranged with the incident rod 312 and is arranged on both sides of the test area. The transmission rod 322 is also installed on multiple mounting seats 6. During actual operation, the second cylinder 321 can drive the transmission rod 322 to move a certain distance along the second direction, so that one end of the transmission rod 322 can first contact the arc-shaped peripheral wall of the rock sample, thereby supporting the radial side of the rock sample through the transmission rod 322 to ensure the accuracy of the test data.

[0069] At the same time, considering that the force generated by the instantaneous impact of the incident rod 312 is relatively large, in order to avoid the large instantaneous impact force from causing damage to the transmission rod 322 and the second cylinder 321. In this embodiment, a buffer structure 323 is provided between the second cylinder 321 and the transmission rod 322, which can partially absorb the instantaneous impact force, thereby achieving a buffering effect. Specifically, the buffer structure 323 includes a square frame 3231, a fixed block 3232 and an absorption rod 3235. Specifically, when working, the second cylinder 321 drives the square frame 3231 to move in the second direction. When one end of the square frame 3231 contacts and applies force to the abutment block 3221 on the transmission rod 322, it will drive the transmission rod 322 to move in the second direction, thereby abutting and supporting the rock sample through the transmission rod 322. When the transmission rod 322 is subjected to a large impact force, its end portion squeezes one end of the absorption rod 3235, thereby driving the absorption rod 3235 to move into the accommodating groove 3233 in the fixed block 3232, so that the force on the absorption rod 3235 is absorbed by the flexible filler 3234 in the accommodating groove 3233, thereby protecting the transmission rod 322 and the second cylinder 321.

[0070] The heating furnace structure 2 includes a furnace body 21 and a furnace door structure 22. The opening of the furnace body 21 is arranged opposite to the test area at the ends of the incident rod 312 and the transmission rod 322. In actual use, the furnace door structure 22 is first opened, and the annular portion 411 at the end of the fixing rod 41 is heated in the furnace body 21. During this process, the furnace door structure 22 is in a closed state, and the square hole on the furnace door structure 22 can make way for the fixing rod 41. At the same time, the furnace door structure 22 will cover part of the opening of the furnace body 21, thereby effectively preventing the loss of heat in the furnace body 21.

[0071] like Figure 6As shown, the furnace door structure 22 includes two baffles 221, and the two baffles 221 are each provided with a rotating rod 222, and the rotating rod 222 is rotatably installed on the machine base 1, and the two rotating rods 222 are each provided with a strip hole 223 on the downward end portion, and a furnace door cylinder 224 is provided on the machine base 1 corresponding to the rotating rod 222, and a connecting rod 225 is provided on the output end of the furnace door cylinder 224, one end of the connecting rod 225 is penetrated through the strip hole 223, and two convex structures 226 are provided on the connecting rod 225 on both sides of the strip hole 223, which are used to limit the connecting rod 225 from escaping from the strip hole 223. During the operation of the furnace door cylinder 224, the connecting rod 225 connected thereto is driven to move in the second direction. At this time, one end of the connecting rod 225 slides in the strip hole 223. When the strip hole 223 contacts the corresponding convex structure 226, the shield plate 221 connected thereto is driven to rotate, so that the two shield plates 221 are rotated at the opening of the furnace body 21 at the same time, thereby realizing the opening and closing of the furnace body 21. In addition, corresponding lower grooves are provided on the corresponding ends of the two shield plates 221. When the two lower grooves cooperate, the corresponding square hole is formed. The above structure can well ensure the heating effect inside the furnace body 21 during the test.

[0072] like Figure 7 and Figure 8 The present invention also proposes a rock sample testing method, which is applied to a rock sample testing device 100. The specific structure of the rock sample testing device 100 refers to the above embodiment. Since the rock sample testing method adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. The rock sample testing method includes:

[0073] Preheat the heating furnace and adjust the heating furnace temperature to the corresponding test temperature according to the type of rock sample;

[0074] For different types of rock samples, the test standards often correspond to specific heating temperature ranges, so the heating furnace needs to be heated before testing and adjusted to the appropriate temperature range based on the current sample.

[0075] Install the flexible member 5 on the fixing rod 41, and install the rock sample on the flexible member 5 so that the axis of the rock sample is located on a vertical plane;

[0076] First, install the flexible member 5 in the annular portion 411 at the end of the fixing rod 41, and then position and install the rock sample on the flexible member 5. During this process, it is necessary to check whether the flexible member 5 is damaged. After the installation of the rock sample is completed, it is necessary to ensure that the axis of the rock sample is located on the vertical plane by visual inspection, thereby ensuring that the force applied by the impact structure 3 is applied in the radial direction of the rock sample.

[0077] The rock sample is placed into a heating furnace for heating via a driving structure 42;

[0078] The control driving structure 42 drives the fixing rod 41 to move in the first direction, so that the rock sample is placed in the heating furnace for heating, and the heating time is controlled according to the type of the sample.

[0079] After the rock sample is heated, the driving structure 42 transfers the rock sample to the test area, and the rock sample is immediately tested by the impact structure 3;

[0080] After heating is completed, the rock sample is transferred to the test area by the driving structure 42. At this time, the impact structure 3 starts to work, limits the rock sample and applies pressure and impacts it from one side along the radial direction of the rock sample, thereby breaking the rock sample and obtaining its dynamic tensile strength data.

[0081] After the rock sample is heated, the driving structure 42 transfers the rock sample to the test area, and the impact structure 3 immediately tests the rock sample, including:

[0082] Transferring the rock sample to the testing area via the driving structure 42;

[0083] When testing, it is necessary to ensure that the rock sample is in a high temperature state. After heating is completed, the rock sample needs to be quickly taken out by the driving structure 42 and moved to the test area.

[0084] The incident rod 312 and the transmission rod 322 are driven to contact the arc-shaped wall of the rock sample respectively through the excitation device and the second cylinder 321;

[0085] Adjust the positions of the incident rod 312 and the transmission rod 322 so that the two rods move toward the rock sample at the same time. At this time, the two rods are in a coaxial state and both move to contact the arc-shaped wall of the rock sample, thereby adjusting the position of the rock sample;

[0086] The excitation device drives the incident rod 312 to impact the rock sample, and records the relevant experimental data through the storage device;

[0087] The exciting device drives the incident rod 312 to instantly impact the rock sample, thereby breaking the rock sample. During this process, the storage device records relevant experimental data.

[0088] Although the above steps are carried out step by step, the rock sample testing device 100 has the characteristic of continuous operation when in use. Since the sample needs to be kept in a high temperature state during the test, the above steps are carried out quickly during the actual implementation. The control and positioning of the structural parts need to be adjusted in advance to improve the continuity of the test process as much as possible, thereby ensuring the accuracy of the test data.

[0089] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A rock sample testing device, characterized in that: include: Machine base; An experimental structure, comprising a heating furnace structure and an impact structure, wherein the heating furnace structure and the impact structure are both installed on the machine base along a first direction, and the impact structure is arranged corresponding to the opening end of the heating furnace structure; and A fixing structure, comprising a fixing part, the fixing part is arranged on the base at a side of the impact structure away from the heating furnace structure, and the fixing part has a movement stroke along the first direction, and a flexible member is arranged on the fixing part, and the flexible member is used to fix the rock sample; Wherein, the first direction is a horizontal direction.

2. The rock sample testing device according to claim 1, characterized in that: The fixing part is configured as a fixing rod, and one end of the fixing rod is provided with a circular ring part; The flexible member is configured to be cylindrical and installed in the annular portion, and a limiting hole is provided on the flexible member along the second direction; The second direction is arranged perpendicularly to the first direction on a horizontal plane, and two vertical inner walls of the limiting hole are arranged in an arc shape.

3. The rock sample testing device according to claim 2, characterized in that: The fixing structure further comprises a driving structure, which is arranged on the machine base at a side of the impact structure away from the heating furnace structure, and is connected to one end of the fixing rod to adjust the horizontal position and vertical position of the fixing rod; and / or, The outer ring of the flexible member is provided with a circle of limiting grooves corresponding to the annular portion; and / or, Two arc-shaped convex parts are respectively arranged on both end surfaces of the flexible member at positions corresponding to the limiting holes, and the arc-shaped walls of the arc-shaped convex parts are connected to the arc-shaped inner walls of the limiting holes.

4. The rock sample testing device according to claim 2, characterized in that: The impact structure includes an impact structure and an abutment structure, the impact structure and the abutment structure are arranged on the machine base along the second direction, and a test area is formed between the abutment structure and the impact structure, the abutment structure is used to limit one side of the rock sample in the horizontal direction, and the output end of the impact structure corresponds to the abutment structure, so as to apply collision force to the rock sample.

5. The rock sample testing device according to claim 4, characterized in that: The base is provided with a plurality of mounting seats spaced evenly apart along the second direction; The impact structure comprises: an incident rod, mounted on the plurality of mounting seats on one side of the test area; and An excitation device is installed on the machine base, and an output end of the excitation device is connected to an end of the incident rod away from the test area, so as to drive the incident rod to move along the second direction.

6. The rock sample testing device according to claim 5, characterized in that: The abutting structure comprises: a transmission rod, mounted on the plurality of mounting seats on the other side of the test area corresponding to the incident rod; and A second cylinder is installed at one end of the transmission rod away from the test area and connected to the transmission rod, and is used to adjust the horizontal position of the end of the transmission rod at the test area; Wherein, a buffer structure is provided between the transmission rod and the output end of the second cylinder.

7. The rock sample testing device according to claim 6, characterized in that: An abutment block is provided on the peripheral wall of one end of the transmission rod away from the test area; The buffer structure comprises: A square frame mounted on the output end of the second cylinder; A fixing block is installed on the inner side of the square frame, wherein a receiving groove is provided in the fixing block, and a flexible filler is provided in the receiving groove; and, The absorption rod has one end portion disposed in the flexible filler, and the other end portion slides through the fixed block and the square frame and abuts against one end portion of the transmission rod.

8. The rock sample testing device according to claim 2, characterized in that: The heating furnace structure comprises: A furnace body is installed on the machine base, and an opening of the furnace body is arranged corresponding to the test area; and A furnace door structure is arranged on the machine base corresponding to the opening of the furnace body, and a square hole corresponding to the fixing rod is arranged on the furnace door structure. The furnace door structure is used to shield the opening of the furnace body.

9. A rock sample testing method, applied to the rock sample testing device as claimed in any one of claims 1 to 8, characterized in that: The rock sample testing method comprises: Preheat the heating furnace and adjust the heating furnace temperature to the corresponding test temperature according to the type of rock sample; Install the flexible member on the fixed rod, and install the rock sample on the flexible member so that the axis of the rock sample is located on a vertical plane; The rock sample is placed into a heating furnace for heating by a driving structure; After the rock sample is heated, the rock sample is transferred to the test area through the driving structure and immediately tested by the impact structure.

10. The rock sample testing method according to claim 9, characterized in that: After the rock sample is heated, the driving structure transfers the rock sample to the test area and immediately tests the rock sample through the impact structure, including: Transferring the rock sample to the testing area via the driving structure; The incident rod and the transmission rod are driven to contact the arc-shaped wall of the rock sample respectively through the excitation device and the second cylinder; The excitation device drives the incident rod to impact the rock sample and records the relevant experimental data through the storage device.

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