Rock mass variable rigidity dynamic damage simulation test equipment

Abstract

The invention discloses rock mass variable rigidity dynamic damage simulation test equipment, and belongs to the field of rock mass mechanical test equipment. A placing table for placing a rock mass sample is arranged at the central position in the test device body of the equipment; a first moving structure of the pushing mechanism is fixedly arranged on the first side of the testing device body, and a rock mass sample is placed at the front end and can be close to or away from the placement table; the pushing structure is arranged at the top of the first moving structure and is configured to push the rock mass sample to the placing table from the first moving structure and push the rock mass sample after the test is completed away from the placing table; a second moving structure of the collecting mechanism is fixedly arranged on the second side of the test device body, and the first side is opposite to the second side; the collecting hopper is configured to receive the rock mass sample pushed down by the pushing structure and is arranged on the upper portion of the second moving structure, and the second moving structure is configured to drive the collecting hopper to be close to or away from the containing table. The lofting device is higher in placing and positioning precision, stability and safety, and lofting is more convenient.

Description

Technical Field

[0001] The present application relates to the technical field of rock mass mechanics testing equipment, and in particular to a rock mass variable stiffness dynamic destruction simulation testing equipment. Background Art

[0002] With the rapid development of the national economy, industries such as mining, civil engineering, construction, and water conservancy have also developed rapidly. At the same time, they are also facing many challenges such as deep well mining, large slope management, deep tunnel excavation, and the stability of the rock foundation of super-high-rise buildings. At present, some unconventional disasters have seriously affected engineering construction and efficient resource recovery in the mining practice of deep high-stress hard rock ore bodies, such as rock bursts, zonal fractures, and plate cracks. Compared with shallow areas, the most significant feature of deep resource mining is that the underground rock mass is already in a high-stress environment before mining. During the mining process, it is subjected to unloading, loading, and combined loading and unloading, and the stress path is very complex. Research in recent years has found that the above disasters are closely related to the energy transfer and release of deep high-stress hard rock in the rock mass under excavation unloading and mining disturbance. Therefore, it is very necessary to study the energy transfer and release of underground rock mass.

[0003] An existing rock mass energy storage and release variable stiffness test device includes an axial pressure stiffness adjustment device, a confining pressure variable stiffness adjustment device, a deformation measurement system and a measurement and control system. The measurement and control system is connected to the deformation measurement system to control the axial variable stiffness adjustment actuator, the axial loading actuator, the horizontal variable stiffness adjustment actuator and the horizontal loading actuator according to the detection results of the deformation measurement system. The stiffness change control and real-time feedback of the axial loading and confining pressure loading are realized, and the changes of stiffness and strength can be effectively measured and controlled and accurate data can be collected, which can well study the energy transfer and release of underground rock mass.

[0004] However, the test device has the following problems in actual use: First, the test device requires the tester to hold the rock sample and place it on the loading platform. The placement accuracy is difficult to control, and the space around the loading platform is limited, which makes it inconvenient to lay out. There is an axial compression stiffness adjustment device on the top, which makes the layout less safe. Second, when the rock sample is unstable and damaged, the broken rock sample is easily scattered inside the device when it is taken out, which is inconvenient to clean. Summary of the invention

[0005] The embodiment of the present application provides a rock variable stiffness dynamic destruction simulation test equipment, which can solve the problem that the existing test device requires the tester to hold the rock sample and place it on the loading platform, the placement and positioning accuracy is difficult to control, the layout is inconvenient, and the safety is low. When the rock sample becomes unstable and damaged, the broken rock sample is easily scattered inside the device when it is taken out, which is inconvenient to clean.

[0006] In order to achieve the above object, the technical solution of the embodiment of the present invention is:

[0007] In the first aspect, an embodiment of the present invention provides a rock variable stiffness dynamic destruction simulation test device, including a test device body, a pushing mechanism and a collecting mechanism; a placement table for placing rock samples is arranged at the inner center position of the test device body; the pushing mechanism includes a first moving structure and a pushing structure; the first moving structure is fixedly arranged on the first side of the test device body, and the rock sample is placed at the front end, and can be close to or away from the placement table; the pushing structure is arranged on the top of the first moving structure, and is configured to push the rock sample from the first moving structure to the placement table, and push the rock sample away from the placement table after the test is completed; the collecting mechanism includes a second moving structure and a collecting bucket; the second moving structure is fixedly arranged on the second side of the test device body, and the first side and the second side are opposite; the collecting bucket is configured to receive the rock sample pushed down by the pushing structure, and is arranged on the upper part of the second moving structure, and the second moving structure is configured to drive the collecting bucket to approach or move away from the placement table.

[0008] In a possible implementation, the first movable structure includes a first mounting base plate, a first support, a placement plate and a first translation assembly; the first translation assembly is arranged on the first mounting base plate; the first support is arranged on the first translation assembly; the placement plate is arranged on the top of the first support; the rock sample is placed on one end of the placement plate close to the placement table; the first translation assembly can drive the first support to move along the length direction of the first mounting base plate to drive the placement plate to approach or move away from the placement table.

[0009] In a possible implementation, the first translation assembly includes a first drive motor, a first screw, a first guide rail and a first slider; the first drive motor is fixedly mounted on the outer end of the first mounting base plate; one end of the first screw is connected to the first drive motor, and the other end is rotatably connected to the first mounting base plate; the bottom surface of the first support is threadedly connected to the first screw; one first guide rail is respectively arranged on both sides of the width direction of the first mounting base plate; at least one first slider is respectively arranged on both sides of the width direction of the first support; the first slider is clamped on the first guide rail at the corresponding position and can slide along the first guide rail.

[0010] In a possible implementation, the upper surface of the placement plate is flush with the table surface of the placement table, and the end surface facing the placement table is configured as a curved surface that matches the outer wall of the placement table.

[0011] In a possible implementation, the pushing structure includes a pushing arm and a pushing assembly; the pushing arm is disposed on the top of the first movable structure; the pushing assembly is connected to the pushing arm and is configured to push the pushing arm toward or away from the placement table.

[0012] In a possible implementation, the pushing arm includes a fixed block, a support arm and a pushing block; the fixed block is T-shaped; the support arm includes at least one, at least one of which has one end fixedly connected to the upper part of the fixed block and the other end connected to the pushing block; the pushing block is arranged on the placement plate of the first movable structure, and the end surface facing the placement platform is arranged as an arc surface adapted to the outer wall of the rock sample; the placement plate is provided with a slide groove along its own length direction; the lower part of the fixed block is slidably arranged in the slide groove and the lower end extends out of the slide groove to be connected with the pushing assembly.

[0013] In a possible implementation, the pushing assembly includes a pushing drive motor, a pushing screw and a nut; a lower extension plate is provided at the end of the placement plate facing away from the placement table; the pushing drive motor is provided on the lower extension plate; one end of the pushing screw is electrically connected to the pushing drive motor, and the other end is rotatably connected to the first moving structure; the nut is sleeved on the pushing screw; and the lower end of the fixed block is fixedly connected to the nut.

[0014] In one possible implementation, the second movable structure includes a second mounting base, a second support and a second translation assembly; the second translation assembly is arranged on the second mounting base; the second support is arranged on the second translation assembly; one end of the collecting bucket is arranged on the upper part of the second support; the second translation assembly can drive the second support to move along the length direction of the second mounting base to drive the collecting bucket to approach or move away from the placement table.

[0015] In a possible implementation, the second translation assembly includes a second drive motor, a second screw, a second guide rail and a second slider; the second drive motor is fixedly mounted on the outer end of the second mounting base plate; one end of the second screw is connected to the second drive motor, and the other end is rotatably connected to the second mounting base plate; the bottom surface of the second support is threadedly connected to the second screw; a second guide rail is respectively arranged on both sides of the width direction of the second mounting base plate; at least one second slider is respectively arranged on both sides of the width direction of the second support; the second slider is clamped on the second guide rail at the corresponding position and can slide along the second guide rail.

[0016] In a possible implementation, the collecting bucket includes a fixed column and a bucket body; one end of the fixed column is connected to the second movable structure, and the other end is connected to the bucket body; the end surface of the bucket body facing the placing table is set as an arc surface that matches the outer wall of the placing table, and the height of the arc surface is equal to or lower than the placing table, and the other side positions are provided with side panels that are higher than the placing table.

[0017] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0018] The rock mass variable stiffness dynamic destruction simulation test equipment provided by the embodiment of the present invention is provided with a first moving structure of a pushing mechanism fixed on the first side of the test device body, and a rock mass sample is placed at the front end of the first moving structure, and the front end is located outside the test device body, so as to facilitate the setting out of the rock mass sample, and then the first moving structure approaches the placement table to send the rock mass sample close to the placement table. A pushing structure of the pushing mechanism is arranged on the top of the first moving structure, and the pushing structure approaches the placement table under the drive of the first moving structure, and then the pushing structure can push the rock mass sample from the first moving structure to the placement table, and the first moving structure drives the pushing structure away from the placement table. Then the rock mass sample is tested. After the test is completed, the second moving structure fixed on the second side of the test device body drives the collecting bucket arranged on the upper part thereof to approach the placement table, and the first moving structure drives the pushing structure to approach the placement table, and then the pushing structure continues to move to push the rock mass sample away from the placement table, and then the collecting bucket receives the rock mass sample pushed down by the pushing structure. Finally, the second moving structure drives the collecting bucket away from the placement table. The embodiment of the present application facilitates the placement of rock samples before the test and the cleaning of rock samples and debris after the test is completed. Compared with the existing manual placement, the placement positioning accuracy, stability and safety are higher, and the layout is more convenient. The setting of the pushing structure can not only push the rock sample from the first moving structure to the placement table, but also push the rock sample after the test is completed away from the loading platform, and then collect the broken rock samples and debris through the collection bucket, so as to realize the automation of rock sample positioning, placement and cleaning, and improve the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0020] Figure 1 A schematic diagram of the structure of a rock mass variable stiffness dynamic failure simulation test device provided in an embodiment of the present application;

[0021] Figure 2 A schematic diagram of the structure of the push mechanism provided in the embodiment of the present application;

[0022] Figure 3 A schematic diagram of the structure of the collection mechanism provided in the embodiment of the present application;

[0023] Figure 4 A schematic structural diagram of the initial state of the rock mass variable stiffness dynamic failure simulation test equipment provided in an embodiment of the present application;

[0024] Figure 5 A schematic diagram of the structure of the rock mass variable stiffness dynamic failure simulation test equipment provided in the embodiment of the present application, which pushes the rock mass sample to the placement table;

[0025] Figure 6 A schematic structural diagram of the rock mass variable stiffness dynamic destruction simulation test equipment provided in an embodiment of the present application for pushing rock mass samples to a collection mechanism.

[0026] Icons: 1-test device body; 11-placement table; 2-push mechanism; 21-first moving structure; 211-first mounting base; 212-first support; 213-placement plate; 2131-slide; 2132-lower extension plate; 214-first translation assembly; 2141-first drive motor; 2142-first screw rod; 2143-first guide rail; 2144-first slider; 22-push structure; 221-push arm; 2211-fixed block; 2212 -support arm; 2213-push block; 222-push assembly; 2221-push drive motor; 2222-push screw; 2223-nut; 3-collection mechanism; 31-second moving structure; 311-second mounting base plate; 312-second support; 313-second translation assembly; 3131-second drive motor; 3132-second screw; 3133-second guide rail; 3134-second slider; 32-collection bucket; 321-fixed column; 322-bucket body. DETAILED DESCRIPTION

[0027] 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 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.

[0028] In the description of the embodiments of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limitations on the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.

[0029] Please refer to Figures 1 to 6 As shown, an embodiment of the present invention provides a rock mass variable stiffness dynamic destruction simulation test device, including a test device body 1, a pushing mechanism 2 and a collecting mechanism 3.

[0030] like Figure 1 , Figures 4-5 As shown, a placement table 11 for placing rock samples is arranged at the center of the inner part of the test device body 1 .

[0031] like Figure 2 As shown, the pushing mechanism 2 includes a first moving structure 21 and a pushing structure 22. The first moving structure 21 is fixedly arranged on the first side of the test device body 1, and a rock sample is placed at the front end thereof, and can be close to or away from the placement table 11. The pushing structure 22 is arranged on the top of the first moving structure 21, and is configured to push the rock sample from the first moving structure 21 to the placement table 11, and push the rock sample away from the placement table 11 after the test is completed.

[0032] like Figure 3 As shown, the collecting mechanism 3 includes a second moving structure 31 and a collecting bucket 32. The second moving structure 31 is fixedly arranged on the second side of the test device body 1, and the first side and the second side are opposite. The collecting bucket 32 ​​is configured to receive the rock sample pushed down by the pushing structure 22, and is arranged on the upper part of the second moving structure 31. The second moving structure 31 is configured to drive the collecting bucket 32 ​​to approach or move away from the placing table 11.

[0033] The rock mass variable stiffness dynamic failure simulation test equipment provided by the embodiment of the present invention is as follows: Figure 4 As shown, by fixing the first moving structure 21 of the pushing mechanism 2 on the first side of the test device body 1, as shown in FIG. Figure 5As shown, the front end of the first mobile structure 21 is placed on the rock sample, and the front end is located outside the test device body 1, so as to facilitate the setting out of the rock sample. Then the first mobile structure 21 is close to the placement table 11 to send the rock sample close to the placement table 11. Figure 5 As shown, a push structure 22 of the push mechanism 2 is arranged on the top of the first moving structure 21. The push structure 22 is driven by the first moving structure 21 to approach the placement table 11, and then the push structure 22 can push the rock sample from the first moving structure 21 to the placement table 11, and the first moving structure 21 drives the push structure 22 away from the placement table 11. Then the rock sample is tested. After the test is completed, the second moving structure 31 fixed on the second side of the test device body 1 drives the collection bucket 32 ​​arranged on its upper part to approach the placement table 11, and the first moving structure 21 drives the push structure 22 to approach the placement table 11, and then the push structure 22 continues to move to push the rock sample away from the placement table 11, and then the collection bucket 32 ​​receives the rock sample pushed down by the push structure 22. Finally, the second moving structure 31 drives the collection bucket 32 ​​away from the placement table 11. The embodiment of the present application facilitates the placement of rock samples before the test and the cleaning of rock samples and debris after the test is completed. Compared with the existing manual placement, the placement positioning accuracy, stability and safety are higher, and the layout is more convenient. The setting of the pushing structure 22 can not only push the rock sample from the first mobile structure 21 to the placement table 11, but also push the rock sample after the test away from the loading platform, and then collect the broken rock sample and debris through the collecting bucket 32, thereby realizing the automation of rock sample positioning, placement and cleaning, which can improve the test efficiency.

[0034] Reference Figure 2 As shown, the first moving structure 21 includes a first mounting base plate 211, a first support 212, a placement plate 213 and a first translation assembly 214. The first mounting base plate 211 is provided with rectangular weight-reducing holes in an array.

[0035] The first mounting base plate 211 is fixed to the first side of the test device body 1. The first translation assembly 214 is disposed on the first mounting base plate 211. The first support 212 is disposed on the first translation assembly 214. The placement plate 213 is disposed on the top of the first support 212.

[0036] like Figure 2As shown, the first support 212 includes a horizontal plate, a vertical plate, a triangular reinforcement plate and a triangular support plate. The vertical plate is vertically arranged on the upper surface of the end of the horizontal plate away from the placement table 11. Two triangular reinforcement plates are respectively arranged on both sides of the horizontal plate along the width direction. A triangular weight-reducing hole is arranged in the middle of the triangular reinforcement plate. The surface where one right-angled side of the triangular reinforcement plate is located is fixed to the side of the vertical plate facing the placement table 11, and the surface where the other right-angled side is located is fixed to the upper surface of the horizontal plate. The two triangular support plates are arranged in parallel, and the surface where one right-angled side is located is fixed to the surface of the vertical plate. The middle part of the placement plate 213 is clamped to the upper end of the vertical plate, and the bottom surface is placed on the surface where the other right-angled side of the triangular support plate is located. The structure of the first support 212 of the embodiment of the present application is stable, and the placement plate 213 can be stably arranged and supported.

[0037] The rock sample is placed on one end of the placement plate 213 close to the placement platform 11. The first translation assembly 214 can drive the first support 212 to move along the length direction of the first mounting base plate 211 to drive the placement plate 213 to approach or move away from the placement platform 11.

[0038] The first movable structure 21 provided in the embodiment of the present application has a simple and stable structure, and can smoothly transport the rock sample placed on the placement plate 213 to a position close to the placement table 11 , and then move away from the placement table 11 under the drive of the first translation component 214 .

[0039] Continue to refer to Figure 2 As shown, the first translation assembly 214 includes a first drive motor 2141, a first screw rod 2142, a first guide rail 2143 and a first slider 2144. The first drive motor 2141 is fixedly mounted on the outer end of the first mounting base plate 211. One end of the first screw rod 2142 is connected to the first drive motor 2141, and the other end is rotatably connected to the first mounting base plate 211. Figure 2 As shown, a mounting plate is vertically arranged on the first mounting base plate 211, and the other end of the first screw rod 2142 is rotatably connected to the mounting plate. The bottom surface of the first support 212 is threadedly connected to the first screw rod 2142. A first guide rail 2143 is respectively arranged on both sides of the width direction of the first mounting base plate 211. At least one first slider 2144 is respectively arranged on both sides of the width direction of the first support 212. Figure 2 The schematic diagram of the structure in which two first sliding blocks 2144 are arranged on each side is shown. The first sliding blocks 2144 are clamped on the first guide rails 2143 at corresponding positions and can slide along the first guide rails 2143.

[0040] One end of the first screw 2142 of the first translation assembly 214 of the embodiment of the present application is connected to the first drive motor 2141, and the other end is rotatably connected to the first mounting base plate 211, and the first drive motor 2141 drives the first screw 2142 to rotate. The bottom surface of the first support 212 is threadedly connected to the first screw 2142, and the rotation of the first screw 2142 drives the first support 212 to move horizontally, thereby driving the placement plate 213 and the rock sample to move horizontally. The first slider 2144 is clamped on the first guide rail 2143 at the corresponding position, and can slide along the first guide rail 2143, so that the first guide rail 2143 can guide the first support 212 set on the first slider 2144, so that the first support 212 can move horizontally stably and smoothly.

[0041] The first driving motor 2141 is preferably a servo motor, which can be connected to the testing system via a servo controller, thereby achieving precise control of the movement distance of the first translation assembly 214 .

[0042] Reference Figure 1 and Figure 2 As shown, the upper surface of the placement plate 213 is flush with the table surface of the placement platform 11, and the width of the end thereof close to the placement platform 11 can be greater than the placement platform 11. The end surface of the placement plate 213 facing the placement platform 11 is set as a curved surface adapted to the outer wall of the placement platform 11, so that when the placement plate 213 moves to the placement platform 11, it can fit closely with the placement platform 11, which is conducive to the transfer of the rock sample to the placement platform 11 and is not easy to fall during the transfer process.

[0043] like Figure 2 As shown, the pushing structure 22 includes a pushing arm 221 and a pushing assembly 222. The pushing arm 221 is disposed on the top of the first moving structure 21. The pushing assembly 222 is connected to the pushing arm 221 and is configured to push the pushing arm 221 to approach or move away from the placement table 11.

[0044] In the push structure 22 of the embodiment of the present application, when the placement plate 213 of the first mobile structure 21 is against the outer wall of the placement table 11, the push assembly 222 pushes the push arm 221 close to the placement table 11, and the push arm 221 is arranged at the top of the first mobile structure 21, and the rock sample is placed at the front end of the first mobile structure 21, so that the push arm 221 pushes the rock sample to the placement table 11. Afterwards, the push assembly 222 drives the push arm 221 away from the placement table 11, and the rock sample can be tested. The push structure 22 provided in the embodiment of the present application can accurately push the rock sample onto the placement table 11.

[0045] Continue to refer to Figure 2As shown, the push arm 221 includes a fixed block 2211, a support arm 2212 and a push block 2213. The fixed block 2211 is T-shaped. The support arm 2212 includes at least one support arm 2212, one end of which is fixedly connected to the upper part of the fixed block 2211, and the other end is connected to the push block 2213. Figure 2 FIG. 2 shows a schematic diagram of a structure in which two supporting arms 2212 are provided.

[0046] The push block 2213 is arranged on the placement plate 213 of the first mobile structure 21, and the end surface facing the placement platform 11 is arranged as an arc surface adapted to the outer wall of the rock sample. The placement plate 213 is provided with a slide groove 2131 along its length direction. The lower part of the fixed block 2211 is slidably arranged in the slide groove 2131, and the lower end extends out of the slide groove 2131 and is connected to the push assembly 222.

[0047] The push arm 221 of the embodiment of the present application and the fixed block 2211 are T-shaped, and the placement plate 213 of the first mobile structure 21 is provided with a chute 2131 along its length direction. The lower part of the fixed block 2211 is slidably arranged in the chute 2131 and the lower end extends out of the chute 2131 to connect with the push assembly 222, so that the placement plate 213 can be reasonably used as a platform for setting the push arm 221, making the entire structure simple and simple. The end face of the push block 2213 facing the placement table 11 is set to an arc surface that matches the outer wall of the rock sample, so that the push block 2213 fits better when in contact with the rock sample, and the rock sample can be pushed more stably. At the same time, it is convenient to collect and scrape the rock sample and debris on the placement table 11 after the test is completed.

[0048] Furthermore, a brush (not shown) is provided at the bottom of the push block 2213, and the arrangement shape of the brush matches the contour shape of the bottom of the push block 2213. By providing the brush, the placement plate 213 can be automatically cleaned during the pushing process of the push block 2213, and the broken rock samples and debris can be swept to the collection mechanism 3.

[0049] Reference Figure 2 As shown, the push assembly 222 includes a push drive motor 2221, a push screw 2222 and a nut 2223. A lower extension plate 2132 is provided at one end of the placement plate 213 that is away from the placement table 11. The push drive motor 2221 is provided on the lower extension plate 2132. One end of the push screw 2222 is electrically connected to the push drive motor 2221, and the other end is rotatably connected to the first moving structure 21. Specifically, the other end is rotatably connected to the vertical plate of the first support 212. The nut 2223 is sleeved on the push screw 2222. The lower end of the fixed block 2211 is fixedly connected to the nut 2223.

[0050] The arrangement of the placement plate 213 is not only convenient for placing the rock sample, but also convenient for installing the push assembly 222, making the entire structure simple and concise. In practice, one end of the push screw 2222 of the push assembly 222 is connected to the push drive motor 2221, and the other end is rotatably connected to the first mobile structure 21, and the push drive motor 2221 drives the push screw 2222 to rotate. The lower end of the fixed block 2211 is fixed to the nut 2223, and the nut 2223 is sleeved on the push screw 2222 and threadedly connected to the push screw 2222. The rotation of the push screw 2222 drives the fixed block 2211 to move horizontally along the slide slot 2131, thereby driving the push arm 221 to move horizontally.

[0051] The push drive motor 2221 is preferably a servo motor, which can be connected to the test system through a servo controller to achieve precise control of the movement distance of the push arm.

[0052] like Figure 3 As shown, the second moving structure 31 includes a second mounting base plate 311, a second support 312 and a second translation assembly 313. The second mounting base plate 311 is provided with rectangular weight-reducing holes in an array.

[0053] The second mounting base plate 311 is fixed to the second side of the test device body 1. The second translation assembly 313 is disposed on the second mounting base plate 311. The second support 312 is disposed on the second translation assembly 313. One end of the collecting bucket 32 ​​is disposed on the upper portion of the second support 312.

[0054] like Figure 2 As shown, the second support 312 includes a horizontal plate, a vertical plate and a triangular reinforcement plate. The vertical plate is vertically arranged on the upper surface of the end of the horizontal plate away from the placement table 11. Two triangular reinforcement plates are respectively arranged on both sides of the horizontal plate along the width direction. A triangular weight-reducing hole is arranged in the middle of the triangular reinforcement plate. The surface where one right-angled side of the triangular reinforcement plate is located is fixed to the side of the vertical plate facing the placement table 11, and the surface where the other right-angled side is located is fixed to the upper surface of the horizontal plate. One end of the collecting bucket 32 ​​is arranged on the upper part of the vertical plate. The structure of the second support 312 of the embodiment of the present application is stable, and the collecting bucket 32 ​​can be stably arranged and supported.

[0055] The second translation assembly 313 can drive the second support 312 to move along the length direction of the second mounting base plate 311 to drive the collecting bucket 32 ​​to move closer to or away from the placement table 11 .

[0056] The second movable structure 31 provided in the embodiment of the present application has a simple and stable structure, and can smoothly transport the collecting bucket 32 ​​to the vicinity of the placement table 11 to collect the tested rock samples and debris, and then move away from the placement table 11 driven by the second translation component 313.

[0057] Reference Figure 3As shown, the second translation assembly 313 includes a second drive motor 3131, a second screw rod 3132, a second guide rail 3133 and a second slider 3134. The second drive motor 3131 is fixedly mounted on the outer end of the second mounting base plate 311. One end of the second screw rod 3132 is connected to the second drive motor 3131, and the other end is rotatably connected to the second mounting base plate 311. Figure 3 As shown, a mounting plate is vertically arranged on the second mounting base plate 311, and the other end of the first screw rod 2142 is rotatably connected to the mounting plate.

[0058] The bottom surface of the second support 312 is threadedly connected to the second screw rod 3132. A second guide rail 3133 is respectively provided on both sides of the width direction of the second mounting base plate 311. At least one second slider 3134 is respectively provided on both sides of the width direction of the second support 312. The second slider 3134 is clamped on the second guide rail 3133 at the corresponding position and can slide along the second guide rail 3133.

[0059] One end of the second screw 3132 of the second translation assembly 313 of the embodiment of the present application is connected to the second drive motor 3131, and the other end is rotatably connected to the second mounting base plate 311, and the second drive motor 3131 drives the second screw 3132 to rotate. The bottom surface of the second support 312 is threadedly connected to the second screw 3132, and the rotation of the second screw 3132 drives the second support 312 to move horizontally, thereby driving the collection bucket 32 ​​to move horizontally. The second slider 3134 is clamped on the second guide rail 3133 at the corresponding position, and can slide along the second guide rail 3133, so that the second guide rail 3133 can guide the second support 312 set on the second slider 3134, so that the second support 312 can move horizontally stably and smoothly.

[0060] The second driving motor 3131 is preferably a servo motor, which can be connected to the testing system through a servo controller, thereby achieving precise control of the movement distance of the collecting bucket 32.

[0061] Continue to refer to Figure 3 As shown, the collecting bucket 32 ​​includes a fixed column 321 and a bucket body 322. One end of the fixed column 321 is connected to the second movable structure 31, and the other end is connected to the bucket body 322. The end surface of the bucket body 322 facing the placement table 11 is set as a curved surface that matches the outer wall of the placement table 11, and the height of the curved surface is equal to or lower than the placement table 11, and the other side positions are provided with side panels that are higher than the placement table 11.

[0062] After the test is completed, since the end surface of the bucket body 322 of the collecting bucket 32 ​​facing the placing table 11 is set as an arc surface that matches the outer wall of the placing table 11, and the height of the arc surface is equal to or lower than the placing table 11, the collecting bucket 32 ​​is driven by the second moving structure 31 to move until the end surface of the bucket body 322 facing the placing table 11 is in contact with the outer wall of the placing table 11 or is located between the upper and lower edges of the outer wall of the placing table 11, so that the pushing structure 22 can push the rock sample and debris away from the placing table 11, so that they can fall into the collecting bucket 32 ​​for collection without spilling. The other side positions of the bucket body 322 are provided with side plates that are higher than the placing table 11, so as to prevent the collecting bucket 32 ​​from spilling the collected materials.

[0063] Furthermore, the fixing column 321 includes a column body and a flange connection column, so that the collecting bucket 32 ​​can be detachably mounted, and the rock sample and debris in the collecting bucket 32 ​​can be easily dumped. A plurality of weight-reducing holes can be provided on the flange connection column, so as to reduce the weight of the entire collecting bucket 32.

[0064] Of course, the vertical plate and the horizontal plate of the second support 312 can also be rotatably connected through the first rotating structure, and the collecting bucket 32 ​​can be rotatably connected with the vertical plate through the second rotating structure (not shown in the figure). Therefore, when the collecting bucket 32 ​​has finished collecting, the first rotating structure drives the vertical plate to rotate, thereby driving the collecting bucket 32 ​​to rotate to the side of the second mounting bottom plate 311, and then the second rotating structure drives the collecting bucket 32 ​​to rotate, so as to realize the dumping of the rock sample and debris in the collecting bucket 32.

[0065] Specifically, the first rotating structure may be a bearing, the outer ring of which is clamped on the horizontal plate. A clamping column is provided on the lower end surface of the vertical plate, and the clamping column is clamped on the inner hole of the bearing. Limiting holes may be provided on the horizontal plate at the positions on both sides of the vertical plate after the vertical plate is rotated into place, and then limiting blocks may be clamped in the limiting holes to achieve position fixing after the vertical plate is rotated into place.

[0066] Similarly, the second rotating structure can be a bearing, and the outer ring of the bearing is clamped on the vertical plate. One end of the fixing column 321 of the installation bucket is clamped on the inner hole of the bearing. A plurality of fixing hooks can be hinged in the area around the fixing column 321 of the vertical plate. When the installation bucket rotates to the right position, the front end of the fixing hook hooks the fixing column 321, so that the installation bucket no longer rotates, thereby achieving positioning.

[0067] The rock mass variable stiffness dynamic failure simulation test equipment of the embodiment of the present application has a working process as follows: Figures 4 to 6 shown.

[0068] When in use, the rock sample is first placed on the placement plate 213, and the first drive motor 2141 is started to drive the placement plate 213 and the rock sample to move toward the placement platform 11 until the arc surface at the front end of the placement plate 213 fits the outer wall of the placement platform 11. At this time, the push drive motor 2221 is started to drive the push block 2213 of the push arm 221 to move, and the rock sample is pushed from the placement plate 213 to the designated position of the placement platform 11. Then, the first drive motor 2141 runs in the reverse direction, driving the first moving structure 21 and the push structure 22 to exit the test area, thereby completing the positioning and placement of the rock sample. Compared with the existing manual placement, the placement and positioning accuracy, stability and safety are higher.

[0069] After the test of the rock sample is completed, the second drive motor 3131 is started, driving the collection bucket 32 ​​to move toward the placement table 11 until the end face of the collection bucket 32 ​​is in contact with the outer wall of the placement table 11 or is located between the upper and lower edges of the outer wall of the placement table 11. At this time, the first moving structure 21 and the pushing structure 22 enter the test area again, and the pushing structure 22 moves an additional distance inward until the push block 2213 completely pushes the rock sample and debris off the placement table 11, and then falls into the collection bucket 32 ​​for collection. Through the setting of the pushing structure 22, not only can the rock sample be pushed from the first moving structure 21 to the placement table 11, but also the rock sample after the test can be pushed away from the placement table 11, so as to realize the automation of positioning, placement and cleaning of the rock sample, and further improve the test efficiency.

[0070] Furthermore, a positioning mechanism (not shown in the figure) can be provided above the placement table 11 of the test device body 1, and the laser positioning mechanism is configured to locate the position of the rock sample, so that the placement position of the rock sample is more accurate. For example, the positioning mechanism may include an infrared emitting structure, the infrared emitting mechanism is electrically connected to the controller, and the controller is electrically connected to the push drive motor 2221. When the rock sample is pushed into place and touches the infrared ray, the infrared emitting mechanism transmits a signal to the controller, and the controller controls the push drive motor 2221 to stop working, and the rock sample is placed in place.

[0071] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0072] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present application.

Claims

1. A rock mass variable stiffness dynamic failure simulation test equipment, characterized in that: It includes a test device body, a pushing mechanism and a collecting mechanism; A placement table for placing rock samples is provided at the inner center of the test device body; The pushing mechanism includes a first moving structure and a pushing structure; The first movable structure is fixedly arranged on the first side of the test device body, the rock sample is placed at the front end, and can be close to or away from the placement platform; The pushing structure is disposed on the top of the first moving structure, and is configured to push the rock sample from the first moving structure to the placement table, and push the rock sample away from the placement table after the test is completed; The collecting mechanism comprises a second moving structure and a collecting bucket; The second movable structure is fixedly disposed on a second side of the test device body, and the first side and the second side are opposite to each other; The collecting bucket is configured to receive the rock sample pushed down by the pushing structure, and is disposed on the upper part of the second movable structure. The second movable structure is configured to drive the collecting bucket to approach or move away from the placing platform.

2. The rock mass variable stiffness dynamic failure simulation test equipment according to claim 1 is characterized in that: The first moving structure includes a first mounting base plate, a first support, a placement plate and a first translation assembly; The first translation assembly is disposed on the first mounting base plate; The first support is disposed on the first translation assembly; The placement plate is arranged on the top of the first support; The rock sample is placed on one end of the placement plate close to the placement table; The first translation assembly can drive the first support to move along the length direction of the first mounting base plate to drive the placement plate to approach or move away from the placement platform.

3. The rock mass variable stiffness dynamic failure simulation test equipment according to claim 2 is characterized in that: The first translation assembly includes a first drive motor, a first screw rod, a first guide rail and a first slider; The first drive motor is fixedly mounted on the outer side end of the first mounting base plate; One end of the first screw is connected to the first driving motor, and the other end is rotatably connected to the first mounting base plate; The bottom surface of the first support is threadedly connected to the first screw; One first guide rail is respectively provided on both sides of the first mounting base plate in the width direction; At least one first sliding block is respectively arranged on both sides of the first support in the width direction; The first sliding block is clamped on the first guide rail at a corresponding position and can slide along the first guide rail.

4. The rock mass variable stiffness dynamic failure simulation test equipment according to claim 2 is characterized in that: The upper surface of the placement plate is flush with the table surface of the placement table, and the end surface facing the placement table is configured as a curved surface matched with the outer wall of the placement table.

5. The rock mass variable stiffness dynamic failure simulation test equipment according to claim 1 is characterized in that: The pushing structure includes a pushing arm and a pushing assembly; The pushing arm is arranged on the top of the first moving structure; The pushing assembly is connected to the pushing arm and is configured to push the pushing arm toward or away from the placement platform.

6. The rock mass variable stiffness dynamic failure simulation test equipment according to claim 5 is characterized in that: The pushing arm comprises a fixed block, a supporting arm and a pushing block; The fixing block is T-shaped; The support arm comprises at least one support arm, one end of the at least one support arm is fixedly connected to the upper part of the fixed block, and the other end is connected to the push block; The push block is arranged on the placement plate of the first moving structure, and the end surface facing the placement table is arranged to be a curved surface adapted to the outer wall of the rock sample; The placement plate is provided with a slide groove along its length direction; The lower part of the fixed block is slidably disposed in the slide slot, and the lower end thereof extends out of the slide slot and is connected to the push assembly.

7. The rock mass variable stiffness dynamic failure simulation test equipment according to claim 6 is characterized in that: The pushing assembly includes a pushing drive motor, a pushing screw and a nut; A lower extension plate is provided at one end of the placement plate away from the placement table; The push drive motor is arranged on the lower extension plate; One end of the push screw is electrically connected to the push drive motor, and the other end is rotatably connected to the first moving structure; The nut is sleeved on the push screw; The lower end of the fixing block is fixedly connected to the nut.

8. The rock mass variable stiffness dynamic failure simulation test equipment according to claim 1 is characterized in that: The second moving structure includes a second mounting base, a second support and a second translation assembly; The second translation assembly is disposed on the second mounting base plate; The second support is disposed on the second translation assembly; One end of the collecting hopper is arranged on the upper part of the second support; The second translation assembly can drive the second support to move along the length direction of the second mounting base plate to drive the collecting bucket to approach or move away from the placement platform.

9. The rock mass variable stiffness dynamic failure simulation test equipment according to claim 8 is characterized in that: The second translation assembly includes a second drive motor, a second screw rod, a second guide rail and a second slider; The second driving motor is fixedly mounted on the outer side end of the second mounting base plate; One end of the second screw is connected to the second drive motor, and the other end is rotatably connected to the second mounting base plate; The bottom surface of the second support is threadedly connected to the second screw; A second guide rail is respectively provided on both sides of the second mounting base plate in the width direction; At least one second sliding block is respectively arranged on both sides of the second support in the width direction; The second sliding block is clamped on the second guide rail at a corresponding position and can slide along the second guide rail.

10. The rock mass variable stiffness dynamic failure simulation test equipment according to claim 1 is characterized in that: The collecting bucket comprises a fixed column and a bucket body; One end of the fixed column is connected to the second movable structure, and the other end is connected to the bucket body; The end surface of the bucket body facing the placement table is set as a curved surface adapted to the outer wall of the placement table, and the height of the curved surface is equal to or lower than the placement table, and the other side positions are provided with side panels higher than the placement table.

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