Rock breaking test platform and test method

Abstract

The invention discloses a rock breaking test platform and a test method. The rock breaking test platform comprises a seat frame, a propelling device and a cutter mounting device, the propelling device comprises a propelling assembly slidably connected with the seat frame and a power part used for driving the propelling assembly to slide, and the propelling assembly is provided with a rock sample cavity used for containing a rock sample; the cutter mounting device comprises a cutter head and a cutter holder, the cutter head is rotatably connected with the seat frame, and the cutter holder is detachably connected with the cutter head; the rock sample has a rock breaking surface arranged towards the cutter, the cutter is connected with the cutter holder, and when the cutter holder is vertical, the axis of the cutter is parallel to the rock breaking surface; when the tool apron is an inclined tool apron, the axis of the tool and the rock breaking surface form an inclined angle alpha. According to the rock breaking test platform, the vertical tool apron and the inclined tool apron are arranged, the rock breaking capacity of the tool in the vertical state and the inclined state can be simulated only by replacing the tool aprons, and therefore researchers can deeply know the rock breaking capacity of the tool in different states, and the structure of the tool can be optimized.

Description

Technical Field

[0001] The present invention relates to the technical field of rock breaking test devices, and in particular to a rock breaking test platform and a test method. Background Art

[0002] Rock breaking operations in long tunnels mainly rely on hard rock tunnel boring machines (TBMs), especially the rolling action of the cutter on the rock interface. At present, the cutters have problems such as severe wear and frequent replacement, which seriously affect the excavation speed and increase construction costs. It is urgent to study how to improve the wear resistance and rock breaking efficiency of the cutters. At present, various excavation conditions are simulated through the rock breaking test platform, and the wear resistance, cutting performance, rock breaking efficiency, etc. of the test cutters are comprehensively evaluated. Through the analysis of test data, the rock breaking performance and wear law of the cutters are deeply understood, so as to further optimize the performance of the cutters.

[0003] The rock breaking test platform in the related technology includes a base frame, a support platform and a tool holder. The tool holder and the support platform are both connected to the base frame. The tool holder is arranged above the support platform. The tool holder can rotate and rise and fall, and the support platform can translate. The rock sample is installed above the support platform, and the tool is installed on the tool holder. When the tool holder is started, the tool holder drives the tool to descend and rotate, so that the tool can cut the rock sample, which helps researchers understand the wear performance, cutting performance, etc. of the tool.

[0004] However, the above-mentioned rock breaking test platform cannot simulate the rock breaking ability of the tool under an inclined state, which is not conducive to researchers' in-depth understanding of the rock breaking performance of the tool. Summary of the invention

[0005] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] To this end, an embodiment of the present invention proposes a rock breaking test platform. By setting a plurality of tool holders of different specifications (vertical tool holders and inclined tool holders), the vertical installation and inclined installation of the tool can be achieved by simply replacing the tool holder. The operation is simple, and the rock breaking ability of the tool in vertical and inclined states can be simulated, thereby helping researchers to gain an in-depth understanding of the rock breaking ability of the tool in different states, so as to optimize the tool structure.

[0007] The rock breaking test platform of the embodiment of the present invention comprises a frame, a propulsion device and a tool installation device; the propulsion device comprises a propulsion assembly slidably connected to the frame and a power member for driving the propulsion assembly to slide, the propulsion assembly having a rock sample cavity for accommodating a rock sample; the tool installation device comprises a cutter disc and a cutter seat, the cutter disc is rotatably connected to the frame, and the cutter seat is detachably connected to the cutter disc; wherein, the rock sample has a rock breaking surface arranged toward the cutter, the cutter is connected to the cutter seat, and the cutter seat is a vertical cutter seat or an inclined cutter seat; when the cutter seat is a vertical cutter seat, the axis of the cutter is parallel to the rock breaking surface; when the cutter seat is an inclined cutter seat, the axis of the cutter forms an inclination angle α with the rock breaking surface.

[0008] In some embodiments, the inclination angle α is 2° to 15°.

[0009] In some embodiments, the inclined tool seats are provided in multiple groups, at least one group of the inclined tool seats is a first tool seat, when the tool is connected to the tool disc via the first tool seat, the axis of the tool forms a first inclination angle with the rock breaking surface, at least one group of the inclined tool seats is a second tool seat, when the tool is connected to the tool disc via the second tool seat, the axis of the tool forms a second inclination angle with the rock breaking surface, and the first inclination angle and the second inclination angle are not equal.

[0010] In some embodiments, the cutter disc has a first mounting position and multiple second mounting positions, the first mounting position and the second mounting position are both used to connect the cutter seat, the first mounting position is arranged at the center of the cutter disc, and the multiple second mounting positions are evenly arranged along the circumference of the cutter disc.

[0011] In some embodiments, the tool mounting device also includes a swing frame, which is rotatably connected to the base frame along a first axis, and the cutter disc is rotatably connected to the swing frame along a second axis, the first axis is parallel to the rock breaking surface, and the second axis is perpendicular to the first axis.

[0012] In some embodiments, the propulsion assembly includes a propulsion frame, a rock box and a baffle, the propulsion frame is slidably connected to the seat frame, the rock box is connected to the propulsion frame, the rock box has the rock sample cavity, the rock sample cavity has an opening arranged toward the knife seat, and the baffle is arranged at the opening and is detachably connected to the rock box.

[0013] In some embodiments, the rock breaking surface includes a limiting portion and a rock breaking portion for contacting the tool; the baffle bar stops at the limiting portion, the number of the baffle bars is multiple, and at least two of the baffle bars are relatively arranged on both sides of the rock breaking portion.

[0014] In some embodiments, the rock breaking test platform further includes a spray device, wherein the spray device includes a spray pipe, wherein the spray pipe is connected to the rock box, and wherein the spray pipe has a spray head arranged toward the rock sample cavity.

[0015] In some embodiments, the spray pipe is a universal pipe.

[0016] The rock breaking test method of the embodiment of the present invention adopts the rock breaking test platform described in any of the above embodiments, and the rock breaking test method includes the following steps:

[0017] installing the rock sample in the rock sample cavity;

[0018] Installing a knife holder on the knife disc, and then installing the tool on the knife holder;

[0019] The power member is used to drive the rock sample to move toward the tool, so that the rock sample stops at the tool.

[0020] The rock breaking test platform of the embodiment of the present invention, when conducting a rock breaking test, first installs the rock sample in the rock sample cavity, selects a cutter holder of suitable specifications to connect to the cutter disc, and connects the cutter to the cutter holder, then controls the cutter disc to rotate, and drives the rock sample to move in a direction close to the cutter through a power part, so that the rock sample stops at the cutter, and the cutter presses into or cuts the rock sample; by analyzing the test data, the rock breaking ability, wear resistance, cutting performance and other properties of the cutter can be understood, thereby optimizing the cutter structure and improving the rock breaking efficiency and wear resistance of the cutter.

[0021] The rock breaking test platform of the embodiment of the present invention, by setting a plurality of tool holders of different specifications (vertical tool holders and inclined tool holders), can realize vertical installation and inclined installation of the tool only by replacing the tool holder. The operation is simple, and the rock breaking ability of the tool in vertical and inclined states can be simulated, thereby helping researchers to gain a deeper understanding of the rock breaking ability of the tool in different states so as to optimize the tool structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a rock breaking test platform according to an embodiment of the present invention.

[0023] Figure 2 It is a schematic structural diagram of an inclined tool holder of a rock breaking test platform according to an embodiment of the present invention.

[0024] Figure 3 It is a structural schematic diagram of a propulsion frame and a second support of a rock breaking test platform according to an embodiment of the present invention.

[0025] Figure 4 It is a structural schematic diagram of a tool installation device of a rock breaking test platform according to an embodiment of the present invention.

[0026] Figure 5 It is a schematic diagram of the cutter arrangement of a rock breaking test platform according to an embodiment of the present invention.

[0027] Figure 6 It is a schematic structural diagram of a rock box of a rock breaking test platform according to an embodiment of the present invention.

[0028] Reference numerals:

[0029] 100. Rock breaking test platform;

[0030] 1. seat frame; 11. base; 12. first bracket; 13. second bracket; 131. slide plate; 132. limit groove; 133. limit column; 134. adjustment screw; 14. third bracket;

[0031] 2. Propulsion device; 21. Propulsion assembly; 211. Propulsion frame; 212. Rock box; 2121. Rock sample chamber; 313. Baffle bar; 22. Power parts;

[0032] 3. Tool mounting device; 31. Cutter disc; 311. First mounting position; 312. Second mounting position; 313. Disc portion; 314. Shaft portion; 315. Slideway; 32. Cutter seat; 321. Vertical cutter seat; 322. Inclined cutter seat; 33. Three-axis force sensor; 34. Swing frame; 341. Shaft body; 35. Swing motor; 36. Rotating motor;

[0033] 4. Spraying device; 41. Spraying head;

[0034] 201, rock sample; 2011, rock breaking surface; 2012, limiting part; 2013, rock breaking part; 202, cutting tool; 2021, cutting tool shaft; 2022, cutting tool ring. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0036] like Figure 1-Figure 4As shown, the rock breaking test platform 100 of the embodiment of the present invention includes a frame 1, a propulsion device 2 and a tool installation device 3; the propulsion device 2 includes a propulsion assembly 21 slidably connected to the frame 1 and a power member 22 for driving the propulsion assembly 21 to slide, the propulsion assembly 21 has a rock sample cavity 2121 for accommodating a rock sample 201; the tool installation device 3 includes a cutter disc 31 and a cutter seat 32, the cutter disc 31 is rotatably connected to the frame 1, and the cutter seat 32 is detachably connected to the cutter disc 31; wherein the rock sample 201 has a rock breaking surface 2011 arranged toward the cutter 202, the cutter 202 is connected to the cutter seat 32, and the cutter seat 32 is a vertical cutter seat 321 or an inclined cutter seat 322; when the cutter seat 32 is a vertical cutter seat 321, the axis of the cutter 202 is parallel to the rock breaking surface 2011; when the cutter seat 32 is an inclined cutter seat 322, the axis of the cutter 202 forms an inclination angle α with the rock breaking surface 2011.

[0037] The rock breaking test platform 100 of the embodiment of the present invention, when conducting a rock breaking test, first installs the rock sample 201 in the rock sample cavity 2121, and at the same time selects a cutter seat 32 of suitable specifications to connect with the cutter disc 31, and connects the cutter 202 to the cutter seat 32, then controls the cutter disc 31 to rotate, and drives the rock sample 201 to move in a direction close to the cutter 202 through the power part 22, so that the rock sample 201 stops at the cutter 202, and the cutter 202 presses into or cuts the rock sample 201; by analyzing the test data, the rock breaking ability, wear resistance, cutting performance and other properties of the cutter 202 can be understood, thereby optimizing the structure of the cutter 202 and improving the rock breaking efficiency and wear resistance of the cutter 202.

[0038] The rock breaking test platform 100 of the embodiment of the present invention, by setting a plurality of tool holders 32 (vertical tool holder 321 and inclined tool holder 322) of different specifications, can realize the vertical installation and inclined installation of the tool 202 only by replacing the tool holder 32. The operation is simple, and the rock breaking ability of the tool 202 in the vertical state and the inclined state can be simulated, thereby helping researchers to gain a deeper understanding of the rock breaking ability of the tool 202 in different states, so as to optimize the structure of the tool 202.

[0039] Alternatively, if Figure 1 As shown, the power member 22 is a servo cylinder.

[0040] Thereby, the position accuracy and thrust accuracy of the rock sample 201 can be improved.

[0041] Alternatively, if Figure 3 As shown, the tool 202 includes a tool shaft 2021 and a tool ring 2022 . The tool shaft 2021 is connected to the tool seat 32 via bolts. The tool ring 2022 is rotatably mounted on the tool shaft 2021 . The axis of the tool 202 refers to the axis of the tool shaft 2021 .

[0042] As an example, Figure 1As shown, the chassis includes a base 11, a first bracket 12, a second bracket 13 and a third bracket 14. The first bracket 12, the second bracket 13 and the third bracket 14 are all arranged above the base 11 and fixedly connected to the base 11; the first bracket 12 is used to support the servo cylinder, and the cylinder body of the servo cylinder is connected to the first bracket 12; the second bracket 13 is used to support the propulsion assembly 21 to improve the stability of the reciprocating movement of the propulsion assembly 21; the third bracket 14 is used to support the tool mounting device 3.

[0043] like Figure 1 and Figure 4 As shown, the second bracket 13 is in the shape of a rectangular frame, and the propulsion assembly 21 includes a propulsion frame 211 and a rock box 212. The propulsion frame 211 is slidably arranged in the second bracket 13 in the horizontal direction. One side of the propulsion frame 211 is connected to the piston rod of the servo cylinder, and the other side is connected to the rock box 212. The rock box 212 has the above-mentioned rock sample cavity 2121. The rock sample 201 is installed in the rock sample cavity 2121. Starting the servo cylinder can control the reciprocating movement of the rock sample 201, so that the rock sample 201 is close to or away from the tool 202.

[0044] like Figure 4 As shown, the four inner walls of the second bracket 13 are each provided with a slide plate 131, and the propulsion frame 211 is slidably matched with the four slide plates 131; the inner wall of the second bracket 13 has a limiting groove 132, and the slide plate 131 is arranged in the limiting groove 132. A limiting column 133 is provided on the slide plate 131, and the limiting column 133 can be slidably penetrated through the side wall of the second bracket 13, and the sliding direction of the limiting column 133 relative to the second bracket 13 is perpendicular to the moving direction of the propulsion frame 211, thereby limiting the moving direction of the slide plate 131; the side wall of the second bracket 13 is provided with an adjusting screw 134, and the adjusting screw 134 is threadedly matched with the second bracket 13, and the end of the adjusting screw 134 stops at the slide plate 131, and the gap between the slide plate 131 and the propulsion frame 211 can be adjusted by screwing the adjusting screw 134. By reducing the gap between the slide plate 131 and the propulsion frame 211, the vibration of the propulsion frame 211 during the propulsion process can be reduced, thereby further improving the stability of the rock sample 201 during the movement process.

[0045] It is understandable that those skilled in the art may limit the sliding movement of the propulsion frame 211 , for example, by providing a limit block, a travel sensor, etc., to prevent the propulsion frame 211 from being damaged due to excessive travel.

[0046] In some embodiments, Figure 3 As shown, the inclination angle α is 2° to 15°.

[0047] When the tool 202 is connected to the cutter disc 31 through the inclined tool holder 322, the angle between the axis of the tool 202 and the rock breaking surface 2011 is 2° to 15°. This angle range is consistent with the inclination angle of the tool 202 in actual scenarios and can meet the test requirements, thereby obtaining more realistic test data, so that the operator can have a deeper understanding of the rock breaking performance of the tool 202 in an inclined state based on the test data.

[0048] Preferably, the inclination angle α is 3°, 6°, 9° or 12°.

[0049] In some embodiments, the inclined tool seats 322 are provided with multiple groups, at least one group of inclined tool seats 322 is a first tool seat 32, and at least one group of inclined tool seats 322 is a second tool seat 32. When the tool 202 is connected to the tool disc 31 through the first tool seat 32, the axis of the tool 202 forms a first inclination angle with the rock breaking surface 2011. When the tool 202 is connected to the tool disc 31 through the second tool seat 32, the axis of the tool 202 forms a second inclination angle with the rock breaking surface 2011. The first inclination angle is not equal to the second inclination angle.

[0050] By setting a plurality of sets of inclined tool holders 322 with different inclination states, the tool 202 can be placed in different inclination states by replacing the inclined tool holders 322 , thereby simulating the rock breaking performance of the tool 202 at different inclination angles α, which is more conducive to optimizing the performance of the tool 202 .

[0051] Optionally, the inclined tool holder 322 is provided with four groups, namely the first tool holder 32, the second tool holder 32, the third tool holder 32 and the fourth tool holder 32. When the tool 202 is connected to the cutter disc 31 through the third tool holder 32, the axis of the tool 202 forms a third inclination angle with the rock breaking surface 2011. When the tool 202 is connected to the cutter disc 31 through the fourth tool holder 32, the axis of the tool 202 forms a fourth inclination angle with the rock breaking surface 2011; wherein the first inclination angle is 3°, the second inclination angle is 6°, the third inclination angle is 9°, and the fourth inclination angle is 12°.

[0052] Therefore, by replacing the inclined tool holder 322, the states of the tool 202 at the inclination angles α of 3°, 6°, 9° and 12° can be simulated, so as to understand the rock breaking performance of the tool 202 at different inclination angles.

[0053] In some embodiments, Figure 5 As shown, the cutter disc 31 has a first mounting position 311 and multiple second mounting positions 312. The first mounting position 311 and the second mounting position 312 are both used to connect to the cutter seat 32. The first mounting position 311 is arranged at the center of the cutter disc 31, and the multiple second mounting positions 312 are evenly arranged along the circumference of the cutter disc 31.

[0054] Through the above settings, a single cutter 202 can be installed in the first mounting position 311, or multiple cutters 202 can be installed in multiple second mounting positions 312. In other words, the cutter disc 31 has the ability to install only a single cutter 202 and to install multiple cutters 202 at the same time, thereby simulating the rock breaking ability of the cutter 202 under different conditions.

[0055] As an example, Figure 5 As shown, there are three second mounting positions 312, and the three second mounting positions 312 are evenly arranged along the circumference of the cutter disc 31, and the first mounting position 311 is arranged at the center of the cutter disc 31. The first mounting position 311 and the second mounting position 312 are both provided with a three-axis force sensor 33; the cutter seat 32 is disc-shaped, and the three-axis force sensor 33 is connected to the cutter disc 31 by bolts, and the cutter seat 32 is connected to the three-axis force sensor 33 by bolts, so that the cutter seat 32 can be detachable. Through the three-axis force sensor 33, the force data of the cutter 202 during the test process can be obtained, and the performance of the cutter 202 can be understood by analyzing the test data.

[0056] There are three inclined tool seats 322 in each group, and they correspond one to one with the second installation positions 312 ; when the tool seats 32 in the second installation positions 312 are replaced, one group of inclined tool seats 322 needs to be replaced at the same time.

[0057] In addition, the rock breaking test platform 100 also includes four vertical tool holders 321. When it is necessary to understand the rock breaking performance of a single tool 202 in a vertical state, the vertical tool holder 321 is installed in the first mounting position 311; when it is necessary to understand the rock breaking performance of multiple tools 202 in a vertical state, three vertical tool holders 321 can be installed in the three second mounting positions 312 respectively.

[0058] Alternatively, if Figure 5 As shown, the knife seat 32 of the second mounting position 312 is slidably connected to the knife disc 31; specifically, a slide groove 315 is provided on the knife disc 31, and the cross-section of the slide groove 315 is T-shaped. A T-shaped bolt is provided on the knife seat 32, and the head of the T-shaped bolt is slidably connected to the slide groove 315.

[0059] As a result, the knife seat 32 is slidable relative to the knife disc 31 and can be disassembled at the same time, so that the position of the knife 202 can be adjusted to meet the test requirements.

[0060] In some embodiments, Figure 1 and Figure 2 As shown, the tool mounting device 3 also includes a swing frame 34, which is rotatably connected to the base frame 1 along a first axis, and the cutter disc 31 is rotatably connected to the swing frame 34 along a second axis. The first axis is parallel to the rock breaking surface 2011, and the second axis is perpendicular to the first axis.

[0061] When a single cutter 202 is installed on the cutter disc 31, the swing frame 34 is rotated along the second axis to make the cutter 202 swing along the second axis, thereby adjusting the inclination angle α of the single cutter 202 relative to the rock sample 201; at the same time, during the contact between the cutter 202 and the rock sample 201, the cutter 202 can be controlled to swing, thereby testing the rock breaking performance of the cutter 202 in the swinging state.

[0062] As an example, Figure 1 As shown, two shafts 341 are relatively arranged on the outer side of the swing frame 34, and the two shafts 341 are rotatably connected to the third bracket 14 through bearings. The two shafts 341 are coaxially arranged and extend horizontally. The extension direction of the shafts 341 is perpendicular to the sliding direction of the propulsion assembly 21, and the axis of the shafts 341 is the first axis. The third bracket 14 is provided with a swing motor 35 for driving the shaft 341 to rotate. The swing motor 35 is a servo motor. Starting the swing motor 35 can control the swing frame 34 to rotate along the first axis.

[0063] like Figure 2 As shown, the cutter disc 31 includes a disc portion 313 and a shaft portion 314, the tool holder 32 and the shaft portion 314 are respectively arranged on both sides of the disc portion 313 along the axial direction of the cutter disc 31, the disc portion 313 is rotatably connected to one side of the swing frame 34 through a bearing, and a rotating motor 36 is provided on the other side of the swing frame 34, the rotating motor 36 is a servo motor, and the swing frame 34 is a hollow structure, and a reducer, a coupling and a torque sensor are sequentially provided between the output shaft of the rotating motor 36 and the shaft portion 314 of the cutter disc 31, so as to realize the connection between the rotating motor 36 and the cutter disc 31, and the rotating motor 36 can control the rotation of the cutter disc 31, wherein the torque sensor can measure the torque applied to the cutter disc 31, and the performance of the tool 202 can be understood by analyzing the torque data.

[0064] The axis of the cutter head 31 is the second axis. When the second axis is in a horizontal state, the center of the cutter head 31 is aligned with the center of the rock sample 201 along the axial direction of the cutter head 31 . This position is the centering position of the cutter head 31 and the rock sample 201 .

[0065] In some embodiments, Figure 4 and Figure 6 As shown, the propulsion assembly 21 includes a propulsion frame 211, a rock box 212 and a baffle 313. The propulsion frame 211 is slidably connected to the base frame 1, and the rock box 212 is connected to the propulsion frame 211. The rock box 212 has a rock sample cavity 2121, and the rock sample cavity 2121 has an opening arranged toward the knife seat 32. The baffle 313 is arranged at the opening and is detachably connected to the rock box 212.

[0066] After the rock sample 201 is placed in the rock sample cavity 2121 , cement is poured around it to fix it. Then, a retaining bar 313 is arranged at the opening and connected to the rock box 212 . The retaining bar 313 can further limit the position of the rock sample 201 and increase the stability of the rock sample 201 .

[0067] Optionally, the rock box 212 is slidably connected to the propulsion frame 211 in the vertical direction. The propulsion frame 211 is provided with a driving device, which includes a screw and nut assembly. The driving device is used to drive the rock box 212 to move back and forth (not shown in the figure).

[0068] Thus, when a single cutter 202 is installed at the center of the cutter head 31, when the cutter 202 contacts the rock sample 201, the rock sample 201 can be controlled to move back and forth, thereby testing the rock breaking performance of the cutter 202 in a linear sliding state.

[0069] In some embodiments, Figure 6 As shown, the rock breaking surface 2011 includes a limiting portion 2012 and a rock breaking portion 2013 for contacting the tool 202; the blocking bar 313 stops at the limiting portion 2012, and there are multiple blocking bars 313, at least two blocking bars 313 are arranged on both sides of the rock breaking portion 2013 relatively.

[0070] The blocking bar 313 is arranged at the edge of the rock sample 201 to prevent the blocking bar 313 from colliding with the cutter 202; in addition, by arranging the blocking bar 313 at two sides of the rock breaking part 2013, the stability of the blocking bar 313 can be further increased.

[0071] As an example, Figure 6 As shown, the rock breaking surface 2011 of the rock sample 201 is rectangular, the central area of ​​which is a circular rock breaking portion 2013, and the edge area is a limiting portion 2012; there are four groups of retaining bars 313, which are respectively arranged at the four corners of the rock breaking surface 2011, and the number of retaining bars 313 in each group is two. The two retaining bars 313 in the same group are parallel to each other, and the retaining bars 313 span two adjacent side lines of the rock breaking surface 2011. The two ends of the retaining bars 313 are connected to the edges of the rock box 212 by bolts, thereby realizing the limitation of the rock sample 201.

[0072] In some embodiments, Figure 6 As shown, the rock breaking test platform 100 further includes a spray device 4 , which includes a spray pipe connected to the rock box 212 , and the spray pipe has a spray head 41 arranged toward the rock sample cavity 2121 .

[0073] By providing the spray device 4, the rock breaking medium can be sprayed to the contact position between the rock sample 201 and the cutter 202 during the rock breaking process to study the influence of the rock breaking medium on the rock breaking effect. In addition, the spray pipe is connected to the rock box 212, and the spray head 41 follows the movement of the rock sample 201, so that the relative position relationship between the spray point and the rock sample 201 can be kept unchanged.

[0074] In some embodiments, the spray pipe is a universal pipe.

[0075] The spray pipe is set as a universal pipe, and the test personnel can manually adjust the position of the injection point, which is more convenient to operate, so that the rock breaking medium can be sprayed to the rock sample 201 at an appropriate angle.

[0076] As an example, Figure 6 As shown, there are six universal tubes, which are evenly divided into two groups. The two groups of universal tubes are relatively arranged on both sides of the rock sample 201, and the three universal tubes in the same group are evenly arranged along the side of the rock sample 201; the spray device 4 also includes a medium pump and a diversion pipe, and the medium pump is used to pump the rock breaking medium into the diversion pipe and then into the universal tube.

[0077] The rock breaking test method of the embodiment of the present invention adopts the rock breaking test platform 100 in any of the above embodiments, and the rock breaking test method includes the following steps:

[0078] S1: Install the rock sample 201 in the rock sample cavity 2121;

[0079] S2: Install the knife seat 32 on the knife disc 31, and then install the tool 202 on the knife seat 32;

[0080] S3: Using the power member 22 to drive the rock sample 201 to move toward the tool 202 , so that the rock sample 201 stops at the tool 202 .

[0081] The rock breaking test platform 100 of the embodiment of the present invention, by setting a plurality of tool holders 32 (vertical tool holder 321 and inclined tool holder 322) of different specifications, can realize the vertical installation and inclined installation of the tool 202 only by replacing the tool holder 32. The operation is simple, and the rock breaking ability of the tool 202 in the vertical state and the inclined state can be simulated, thereby helping researchers to gain a deeper understanding of the rock breaking ability of the tool 202 in different states, so as to optimize the structure of the tool 202.

[0082] When three cutters 202 are installed on the cutter disc 31 , step S2 includes: installing the cutter holder 32 on the cutter disc 31 , then installing the cutter 202 on the cutter holder 32 , and controlling the swing frame 34 to rotate to adjust the second axis to a horizontal state.

[0083] Step S3 includes: using the power member 22 to push the propulsion assembly 21 to move toward the tool 202 , and using the rotary motor 36 to drive the cutter head 31 to rotate along the second axis so that the rock sample 201 stops at the tool 202 .

[0084] When a single cutter 202 is installed on the cutter disc 31, according to the test requirements, when the rock sample 201 stops at the cutter 202, the cutter disc 31 can be controlled to swing along the first axis or the cutter disc 31 can be controlled to rotate along the second axis (the cutter disc 31 and the rock sample 201 need to be adjusted to be centered at this time) to perform rolling, sliding and other tests on the cutter 202, so as to have a deeper understanding of the rock breaking performance of the cutter 202.

[0085] It should be noted that the above description of the rock breaking test platform 100 is also applicable to the rock breaking test method, and will not be repeated here.

[0086] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A rock breaking test platform (100), characterized in that: include: Seat frame (1); A propulsion device (2), the propulsion device (2) comprising a propulsion assembly (21) slidably connected to the seat frame (1) and a power member (22) for driving the propulsion assembly (21) to slide, the propulsion assembly (21) having a rock sample cavity (2121) for accommodating a rock sample (201); A tool mounting device (3), the tool mounting device (3) comprising a tool disc (31) and a tool seat (32), the tool disc (31) being rotatably connected to the seat frame (1), and the tool seat (32) being detachably connected to the tool disc (31); The rock sample (201) has a rock breaking surface (2011) arranged toward the tool (202), the tool (202) is connected to the tool holder (32), and the tool holder (32) is a vertical tool holder (321) or an inclined tool holder (322); When the tool holder (32) is a vertical tool holder (321), the axis of the tool (202) is parallel to the rock breaking surface (2011); When the tool holder (32) is an inclined tool holder (322), the axis of the tool (202) forms an inclined angle α with the rock breaking surface (2011).

2. The rock breaking test platform (100) according to claim 1, characterized in that: The inclination angle α is 2° to 15°.

3. The rock breaking test platform (100) according to claim 2, characterized in that: The inclined tool seats (322) are provided in a plurality of groups, at least one group of the inclined tool seats (322) is a first tool seat (32), when the tool (202) is connected to the tool disc (31) via the first tool seat (32), the axis of the tool (202) forms a first inclination angle with the rock breaking surface (2011), at least one group of the inclined tool seats (322) is a second tool seat (32), when the tool (202) is connected to the tool disc (31) via the second tool seat (32), the axis of the tool (202) forms a second inclination angle with the rock breaking surface (2011), and the first inclination angle and the second inclination angle are not equal.

4. The rock breaking test platform (100) according to claim 3, characterized in that: The cutter disc (31) has a first mounting position (311) and a plurality of second mounting positions (312); the first mounting position (311) and the second mounting position (312) are both used to connect to the cutter seat (32); the first mounting position (311) is arranged at the center of the cutter disc (31), and the plurality of second mounting positions (312) are evenly arranged along the circumference of the cutter disc (31).

5. The rock breaking test platform (100) according to claim 1, characterized in that: The tool mounting device (3) further comprises a swing frame (34), wherein the swing frame (34) is rotatably connected to the base frame (1) along a first axis, and the cutter disc (31) is rotatably connected to the swing frame (34) along a second axis, wherein the first axis is parallel to the rock breaking surface (2011), and the second axis is perpendicular to the first axis.

6. The rock breaking test platform (100) according to claim 5, characterized in that: The propulsion assembly (21) comprises a propulsion frame (211), a rock box (212) and a baffle (313); the propulsion frame (211) is slidably connected to the seat frame (1); the rock box (212) is connected to the propulsion frame (211); the rock box (212) has a rock sample cavity (2121); the rock sample cavity (2121) has an opening arranged toward the knife seat (32); the baffle (313) is arranged at the opening and is detachably connected to the rock box (212).

7. The rock breaking test platform (100) according to claim 6, characterized in that: The rock breaking surface (2011) comprises a limiting portion (2012) and a rock breaking portion (2013) for contacting the tool (202); The blocking bar (313) stops at the limiting portion (2012), and there are a plurality of blocking bars (313), with at least two blocking bars (313) being arranged relatively on two sides of the rock breaking portion (2013).

8. The rock breaking test platform (100) according to claim 7, characterized in that: It also includes a spray device (4), the spray device (4) including a spray pipe, the spray pipe is connected to the rock box (212), and the spray pipe has a spray head (41) arranged toward the rock sample cavity (2121).

9. The rock breaking test platform (100) according to claim 8, characterized in that: The spray pipe is a universal pipe.

10. A rock breaking test method, characterized in that: Using the rock breaking test platform (100) according to any one of claims 1 to 9, the rock breaking test method comprises the following steps: Installing the rock sample (201) in the rock sample cavity (2121); Installing a knife seat (32) on the knife disc (31), and then installing the knife (202) on the knife seat (32); The power member (22) is used to drive the rock sample (201) to move in a direction close to the tool (202), so that the rock sample (201) stops at the tool (202).

Images