A shaft tunneling machine roller cutter rock breaking experiment platform

Abstract

The application discloses a shaft tunneling machine roller cutter rock breaking experiment platform, relates to a rock breaking experiment platform, and can realize rock breaking experiment. The experiment platform comprises a press frame, a vertical loading device, a rock box propelling assembly and a cutter mounting mechanism; the vertical loading system is arranged in the press frame; the cutter mounting mechanism is arranged on the vertical loading device; the rock box propelling assembly is movably arranged in the press frame; a rock sample can be arranged on the rock box propelling assembly; the cutter mounting mechanism is provided with a cutter and can move together with the cutter mounting mechanism, so that the rock sample on the rock box propelling assembly is broken; the scheme provided by the application can realize rock breaking test on the rock sample and realize real-time monitoring, so that rock crack change data can be accurately mastered, and rock microdeformation mechanism can be conveniently researched.

Description

Technical Field

[0001] This invention relates to the field of roller cutter rock breaking test platform technology, and more particularly to a roller cutter rock breaking test platform for a vertical shaft tunneling machine. Background Technology

[0002] Cutting rollers are the main rock-breaking tool in tunnel boring machines (TBMs). To meet the requirements of efficient muck collection, vertical shaft TBMs typically have cutterheads with special configurations such as W-shapes or V-shapes. Therefore, during the rock-breaking process of the cutting rollers in a vertical shaft TBM, the centerline of the cutting rollers will always form an angle with the thrust of the TBM. Figure 1 As shown, the rock-breaking behavior of the cutter head under different angles needs to be studied. However, the existing cutter head rock-breaking experimental equipment, whether it is a two-dimensional penetration test, a three-dimensional linear cutting test, or a three-dimensional rotary cutting test platform, is designed for the working condition where the cutter head centerline is consistent with the thrust direction of the tunneling machine. The angle of the cutter head centerline cannot be adjusted significantly, and it is not suitable for studying the rock breaking behavior under the condition of a shaped cutterhead of a vertical shaft tunneling machine where there is a large angle between the cutter head centerline and the thrust direction of the tunneling machine. It is also difficult to freely switch between two-dimensional penetration tests and three-dimensional cutting tests on the same set of equipment. Summary of the Invention

[0003] In view of this, embodiments of the present invention provide a rock-breaking test platform for a vertical shaft tunneling machine with a cutter head, which can realize rock-breaking experiments.

[0004] In a first aspect, embodiments of the present invention provide a rock-breaking experimental platform for a vertical shaft boring machine. The experimental platform includes a press frame, a vertical loading device, a rock box propulsion assembly, and a cutter mounting mechanism. The vertical loading system is disposed within the press frame and can extend and retract vertically to perform loading. The cutter mounting mechanism is disposed on the vertical loading device and can extend and retract together with the vertical loading device. The rock box propulsion assembly is movably disposed within the press frame and can move to the bottom of the cutter mounting mechanism. A rock sample can be mounted on the rock box propulsion assembly. The cutter mounting mechanism is equipped with cutters and can move together with the cutter mounting mechanism to break the rock sample on the rock box propulsion assembly.

[0005] According to a specific implementation of an embodiment of the present invention, the press frame includes an upper frame and a lower frame; the upper frame and the lower frame are fixedly connected by a support column; an experimental chamber is formed inside the press frame; the vertical loading device includes a loading power component and a loading platform; the loading power component is disposed inside the experimental chamber and is connected to the loading platform via a connector; a cutter mounting mechanism is disposed on the loading platform and is capable of adjusting the rock-breaking angle of the cutter; both ends of the loading power component are horizontally connected to the two side walls inside the upper frame of the press and are capable of vertically moving up and down on the side walls, thereby driving the loading platform to move up and down together.

[0006] According to a specific implementation of an embodiment of the present invention, the tool mounting mechanism includes a fixed plate, a driving component, a rotating shaft, a tool mounting plate, and an arc-shaped slide rail; the fixed plate is horizontally disposed on the loading platform; the tool mounting plate is movably disposed on the fixed plate and forms an angle A with the fixed plate; the rotating shaft is disposed on the fixed plate and movably connected to the tool mounting plate; the driving component is disposed on the fixed plate and is drively connected to the rotating shaft, thereby driving the rotating shaft to rotate; the rotating shaft can drive the tool mounting plate to rotate, thereby adjusting the angle A between the tool mounting plate and the fixed plate, and thus adjusting the rock breaking angle; one end of the arc-shaped slide rail is connected to the tool mounting plate, and the other end of the arc-shaped slide rail can be detachably connected to the fixed plate, thereby positioning the angle A between the tool mounting plate and the fixed plate; the tool is detachably disposed on the tool mounting plate by a tool shaft fixing device.

[0007] According to a specific implementation of an embodiment of the present invention, a fixed clamp is provided on the loading platform; the fixed clamp is connected to the loading platform via a guide rail, thereby enabling reciprocating movement in the horizontal direction; a fixed plate is fixedly connected to the fixed clamp via connecting bolts; a plurality of bolt holes are provided at intervals on the arc slide rail; one end of the arc slide rail is connected to one end of the tool mounting plate via a third fixing bolt, and the arc slide rail is also detachably connected to the fixed plate via connecting bolts passing through the bolt holes.

[0008] According to a specific implementation of an embodiment of the present invention, a tool mounting plate is provided with a plurality of screw holes; the tool shaft fixing device includes two connecting columns, which are detachably connected to the screw holes of the tool mounting plate by first fixing bolts; a tool shaft is provided between the two connecting columns, which is detachably mounted on the connecting columns and can rotate on the two connecting columns; the tool is detachably fixed on the tool shaft by a hob fixing bolt; the tool is a three-dimensional hob.

[0009] According to a specific implementation of an embodiment of the present invention, a plurality of bolt holes are provided at equal intervals on the arc slide rail, and two adjacent bolt holes are set at a 5° interval with respect to the center of the arc slide rail; the included angle A between the tool mounting plate and the fixing plate ranges from 0° to 90°.

[0010] According to one specific implementation of the present invention, a plurality of screw holes are provided at equal intervals on the tool mounting plate; a single three-dimensional hob or a double three-dimensional hob can be provided on the tool shaft.

[0011] According to a specific implementation of an embodiment of the present invention, the upper frame and the lower frame of the press are both cuboid structures, and the support columns are arranged vertically between the upper frame and the lower frame of the press, and are located at the four corners of the upper frame and the lower frame of the press.

[0012] According to a specific implementation of an embodiment of the present invention, the rock box propulsion assembly includes a propulsion system, a rock box, a rock box base, and a track; the track is fixedly disposed within the experimental chamber and located on the upper end surface of the lower frame of the press; the rock box base is reciprocated on the track via rollers; the rock box is disposed on the preset rock box base, and the rock box is provided with a clamping mechanism, which can be used to fix the rock sample; the propulsion system is disposed within the experimental chamber and connected to the rock box base, thereby driving the rock box base to move linearly reciprocally on the track.

[0013] According to one specific implementation of the present invention, the propulsion system includes a motor, an elliptical track, and a connecting rod; the connecting rod is provided with a gear, and the elliptical track is provided with a gear; one end of the connecting rod is connected to the rock box base, and the elliptical track is connected to the motor for transmission; the elliptical track meshes with the gear on the connecting rod through its gear, thereby enabling the rock box base to move through the connecting rod.

[0014] According to a specific implementation of an embodiment of the present invention, the clamping mechanism includes a first loading hydraulic cylinder, a first mounting plate, a second loading hydraulic cylinder, and a second mounting plate; the first loading hydraulic cylinder is disposed in the rock box and is capable of lateral extension and retraction, thereby clamping the rock sample through the second mounting plate; the second loading hydraulic cylinder is disposed in the rock box and is capable of longitudinal extension and retraction, thereby clamping the rock sample through the first mounting plate; the rock breaking surface of the rock sample is an inclined surface, and the cutting tool acts perpendicular to the rock breaking surface on the rock breaking surface.

[0015] According to a specific implementation of an embodiment of the present invention, the experimental platform further includes LED lights, a camera, and a computer; the LED lights are respectively disposed on the left and right sides of the press frame and are capable of illuminating the rock sample; the camera is disposed on the front side of the press frame and is capable of capturing images of the rock sample breaking process; the computer is electrically connected to the camera and is capable of receiving image data from the camera, thereby obtaining rock deformation analysis data.

[0016] The rock-breaking test platform for a vertical shaft tunneling machine provided by this invention can conduct rock-breaking tests on rock samples and achieve real-time monitoring, thereby accurately grasping the data on changes in rock cracks and facilitating the study of the micro-deformation mechanism of rocks. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1This is a schematic diagram comparing different working conditions of a hob according to an embodiment of the present invention;

[0019] Figure 2 This is a front view of the roller cutter rock-breaking test platform shown in an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of an adjustable hob mounting angle structure according to an embodiment of the present invention;

[0021] Figure 4 This is a front view of the hob installation during a three-dimensional linear cutting test, as shown in an embodiment of the present invention.

[0022] Figure 5 This is a perspective view of the hob installation during a three-dimensional linear cutting test, as shown in an embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram illustrating the combination of a movable rock box propulsion system and a cutterhead mounting system according to an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram illustrating the action of the roller cutter installation system on rock sample II in a movable rock box, as shown in an embodiment of the present invention.

[0025] Figure 8 This is a schematic diagram of the operation of the two-dimensional roller cutter mounting system after switching the cutting edge of the roller cutter in rock sample I, as shown in an embodiment of the present invention.

[0026] Figure 9 This is a schematic diagram illustrating the action of a roller cutter adjusting its installation angle on a rock under three-dimensional conditions, as shown in an embodiment of the present invention.

[0027] Figure 10 This is a schematic diagram illustrating the action of a roller cutter blade with an adjustable installation angle on a rock under two-dimensional conditions, as shown in an embodiment of the present invention.

[0028] Figure 11 This is a schematic diagram of the assembly of a two-dimensional hobbing cutter blade and a tool mounting plate, as shown in an embodiment of the present invention.

[0029] Figure 12 This is a diagram illustrating the interaction between the cutting edge of a two-dimensional hobbing cutter and a rock sample on a rock box, as shown in an embodiment of the present invention.

[0030] In the diagram: 1-Upper frame of the press; 2-Loading power unit; 3-Connector; 4-Loading platform; 5-Lower frame of the press; 6-Fixing fixture; 7-First fixing bolt; 8-Connecting bolt; 9-Fixing plate; 10-Rotating shaft; 11-Tool mounting plate; 12-Arc slide rail; 13-Second fixing bolt; 14-Screw hole; 15-Third fixing bolt; 16-Three-dimensional hob; 17-Three-dimensional hob fixing bolt; 18-Tool shaft; 19-Tool shaft fixing device; 20-Two-dimensional hob cutting edge. ; 21-Two-dimensional roller cutter fixing bolt; 22-Rock sample; 23-First loading hydraulic cylinder; 24-First mounting plate; 25-Third mounting plate; 26-Rock box; 27-Second loading hydraulic cylinder; 28-Second mounting plate; 29-Rock box base; 30-Wheel; 31-Axle; 32-Rail; 33-Propulsion system; 34-Motor; 35-Elliptical track; 36-Gear; 37-Connecting rod; 38-LED light; 39-Camera; 40-Computer; 41-Rock breaking surface. Detailed Implementation

[0031] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0032] like Figures 1 to 12 As shown, this embodiment of the invention provides a rock-breaking test platform for a vertical shaft boring machine (DBM). This test platform is designed based on the DIC (Digital Cutter Control) rock-breaking test method and is used to conduct rock-breaking tests. Specifically, the test platform includes a press frame, a vertical loading device, a rock box propulsion assembly, a cutter mounting mechanism, and rock deformation monitoring equipment. The vertical loading system is located within the press frame and can extend and retract vertically to apply load. Furthermore, the cutter mounting mechanism is located on the vertical loading device and can extend and retract with the vertical loading device to conduct rock-breaking tests on the rock sample 22. Additionally, the rock box propulsion assembly is movably located within the press frame and can move to the cutter mounting mechanism. The bottom of the mechanism is used for rock breaking tests. Specifically, a rock sample 22 can be installed on the rock box propulsion assembly for rock breaking tests. Furthermore, a cutter mounting mechanism is equipped with a cutter that can move with the cutter mounting mechanism to break the rock sample 22 on the rock box propulsion assembly. Furthermore, a rock deformation monitoring device is set outside the press frame and can monitor and record the rock breaking process of the cutter on the installed rock sample 22 to obtain rock deformation analysis data. The vertical shaft tunneling machine cutter rock breaking test platform provided by the present invention can conduct rock breaking tests on rock samples and achieve real-time monitoring, thereby accurately grasping the rock crack change data and facilitating the study of the rock micro-deformation mechanism.

[0033] Preferably, such as Figures 1 to 12 As shown, the press frame provided by the present invention includes an upper frame 1 and a lower frame 5, wherein the upper frame 1 and the lower frame 5 are fixedly connected by a support column, and an experimental chamber is formed inside the press frame for housing a vertical loading device, a rock box propulsion assembly, and a cutter mounting mechanism; further, the vertical loading device includes a loading power component 2 and a loading platform 4; specifically, the loading power component 2 is disposed inside the experimental chamber and is connected to the loading platform 4 through a connector 3; further, the cutter mounting mechanism is disposed on the loading platform 4 and can adjust the rock-breaking angle of the cutter; further, the two ends of the loading power component 2 are connected horizontally to the two side walls inside the upper frame 1 of the press, and after being powered on, it can move up and down in the vertical direction on the side walls, thereby driving the loading platform 4 to move up and down together, and then driving the roller cutter to penetrate the rock sample 22 downward.

[0034] Preferably, such as Figures 1 to 12As shown, the tool mounting mechanism includes a fixed plate 9, a drive component, a rotating shaft 10, a tool mounting plate 11, and an arc-shaped slide rail 12. The fixed plate 9 is horizontally mounted on the loading platform 4. The tool mounting plate 11 is movably mounted on the fixed plate 9 and forms an angle A with the fixed plate 9. Furthermore, the rotating shaft 10 is mounted on the fixed plate 9 and movably connected to the tool mounting plate 11, allowing the tool mounting plate 11 to rotate around the rotating shaft 10. The drive component is mounted on the fixed plate 9 and is connected to the rotating shaft 10, thereby driving the rotating shaft 10 to rotate. The rotating shaft 10 can drive the tool mounting plate... The plate 11 rotates, thereby adjusting the included angle A between the tool mounting plate 11 and the fixed plate 9, and thus adjusting the rock breaking angle. In this application, when conducting experimental research on different tool mounting angles, after the tool mounting angle is adjusted, the required rock sample should also be adjusted in shape during processing to adapt to the loading requirements of the hobbing cutter. Furthermore, the lower end of the arc slide rail 12 is connected and fixed to the tool mounting plate 11 by the third fixing bolt 15, and can be disassembled if necessary. The upper end of the arc slide rail 12 is also connected to the fixed plate 9 by bolts. Furthermore, one end of the arc slide rail 12 is connected to the tool mounting plate 11, and the arc slide rail... The other end of the rail 12 can be detachably connected to the fixed plate 9, thereby positioning the included angle A between the cutter mounting plate 11 and the fixed plate 9; the cutter is detachably mounted on the cutter mounting plate 11 via the cutter shaft fixing device 18; when the installation angle of the cutter (such as the three-dimensional hob 16) is different, the load on the three-dimensional hob 16 during rock breaking and the energy consumption of the hob rock breaking will also be different; theoretical research has found that different installation angles of the three-dimensional hob 16 have a significant impact on the energy consumption and rock breaking load; specifically, the installation angle of the cutter can be adjusted by adjusting the included angle A, and by adjusting the installation angle of the hob, various working conditions can be met, compensating for the current Previous types of roller cutter rock-breaking test platforms suffer from drawbacks such as large size, limited functionality, single operating conditions, and inconvenient assembly and disassembly. In actual experiments, lateral imbalance forces on the cutters can cause uneven wear of the cutting edges, shortening the cutter's lifespan. Therefore, the installation angle of the cutter side rollers and the rollers under the W-shaped cutterhead of the shaft boring machine should be selected according to actual needs during installation. Using this method can achieve relatively low energy consumption, relatively high rock-breaking efficiency, and reduce uneven wear of the rollers. The novel roller cutter rock-breaking test platform described in this invention can be easily disassembled and fixed with bolts, enabling switching between two-dimensional penetration and three-dimensional linear rock cutting.

[0035] Preferably, such as Figures 1 to 12As shown, a fixing clamp 6 is provided on the loading platform 4; the fixing clamp 6 is connected to the loading platform 4 via a guide rail, allowing it to reciprocate horizontally and adjust the rock-breaking position of the tool; further, the fixing plate 9 is fixedly connected to the fixing clamp 6 via connecting bolts 8; the arc slide rail 12 is provided with multiple bolt holes at intervals, so that the tool mounting plate can be auxiliaryly fixed by connecting different bolt holes; specifically, one end of the arc slide rail 12 is connected to one end of the tool mounting plate 11 via a third fixing bolt 15, and the arc slide rail 12 is also detachably connected to the fixing plate 9 via connecting bolts passing through bolt holes; using the above scheme, the tool mounting angle can be adjusted by easily disassembling and connecting with bolts.

[0036] Preferably, such as Figures 1 to 12 As shown, the tool mounting plate 11 has multiple screw holes 14; the tool shaft fixing device 18 includes two connecting posts, which are detachably connected to the screw holes 14 of the tool mounting plate 11 by first fixing bolts 7; further, a tool shaft 18 is provided between the two connecting posts, which can be detachably mounted on the connecting posts and can rotate freely on the two connecting posts; further, the tool is detachably fixed to the tool shaft 18 by hob fixing bolts, and a three-dimensional hob 16 is mounted on the tool shaft 18, with threads on the tool shaft 18 in the mounting area of ​​the three-dimensional hob 16; both ends of the tool shaft 18 are smooth and mounted on the tool shaft fixing device 19, allowing the tool shaft 18 to rotate freely on the tool shaft fixing device 19; the tool shaft fixing device 19 is fixed to the tool mounting plate 11 by second fixing bolts 13; the three-dimensional hob 16 is locked to the tool shaft 18 by three-dimensional hob fixing bolts 17; further, as Figure 4 , Figure 5 As shown, the tool is a three-dimensional hob 16. Of course, the tool can also be a two-dimensional hob, and it can be disassembled and switched. The cutting edges of both the three-dimensional hob 16 and the two-dimensional hob 20 can be disassembled and their shapes can be freely changed according to research needs, realizing the function of changing the shape of the tool.

[0037] Preferably, such as Figures 1 to 12 As shown, the three-dimensional hob 16 is mounted on the cutter shaft 18. The cutter shaft 18 has threads within the mounting area of ​​the three-dimensional hob 16, and both ends of the cutter shaft 18 connected to the rotating shaft fixing device 19 are smooth. The three-dimensional hob 16 is first screwed into a suitable position on the threaded section of the cutter shaft 18, and then fixed to the cutter shaft 18 by the three-dimensional hob fixing bolt 17, so that the three-dimensional hob 16 will not rotate around the axis when not in contact with the rock, and will not move left or right along the cutter shaft 18. Furthermore, after the three-dimensional hob 16 and the three-dimensional hob fixing bolt 17 are installed, the rotating shaft fixing device 19 tightens the three-dimensional hob fixing bolt 17 on the inner side of the connection between the cutter shaft 18 and the cutter shaft fixing device 19, so that the cutter shaft 18 will not move left or right after installation. Further, as Figure 6As shown, after the second fixing bolt 13 is removed, the cutter shaft fixing device 19, cutter shaft 18, first fixing bolt 7, and three-dimensional cutter 16 can all be disassembled. After disassembly, the cutter blade 20 can be fixed on the rotatable cutter mounting plate 11 by the two-dimensional cutter fixing bolt 21, realizing the function of switching the three-dimensional linear cutting test of the cutter to the two-dimensional penetration test. Furthermore, the rotatable cutter mounting plate 11 is provided with equally spaced screw holes, and one cutter blade 20 or two cutters can be installed according to research needs. When two cutter blades 20 are installed at the same time, they can be symmetrically installed on the screw holes 14 on both sides of the central axis of the rotatable cutter mounting plate 11. The multiple screw holes 14 are arranged at a certain interval, which can realize the double cutter rock breaking research with different blade spacing.

[0038] Preferably, such as Figures 1 to 12 As shown, the lower end of the arc slide rail 12 is connected to the tool mounting plate 11 by the third fixing bolt 15. The upper end of the arc slide rail 12 can slide freely and can be detachably connected to the fixing plate 9 by bolts. The connection can fix the position, allowing the tool mounting plate 11 to be freely adjusted in terms of installation angle. Specifically, the arc slide rail 12 is provided with multiple bolt holes at equal intervals. Two adjacent bolt holes are set at 5° intervals with respect to the center of the arc slide rail 12. The included angle A between the tool mounting plate 11 and the fixing plate 9 is in the range of 0°-90°. This 5° interval refers to the included angle of the radius of the arc slide rail 12, allowing the tool mounting plate 11 to be freely rotated in the range of 0°-90° by removing the third fixing bolt 15 and re-selecting bolt holes for installation. This enables the tool mounting plate 11 to be freely rotated in 5° intervals, thus achieving the function of freely adjusting the hob installation angle.

[0039] Preferably, such as Figures 1 to 12 As shown, the tool mounting plate 11 has multiple screw holes 14 spaced at equal intervals; the tool is a two-dimensional hob or a three-dimensional hob 16; specifically, the tool shaft 18 can be equipped with a single three-dimensional hob 16 or two three-dimensional hobs 16; the three-dimensional hob 16 can be installed at any position on the tool shaft 18 and fixed in position by the three-dimensional hob fixing bolt 17, so that the three-dimensional hob 16 can realize the function of freely adjusting the hob spacing. The three-dimensional hob fixing bolt 17 can be disassembled. After disassembling the tool shaft fixing device 19 and the three-dimensional hob 16; further, as Figures 10 to 11 As shown, the hobbing cutter blade 20 can be directly fixed to the tool mounting plate 11 by two-dimensional hobbing cutter fixing bolts 21. The tool mounting plate 11 has screw holes 14 on both sides. The hobbing cutter blade 20 can be connected to the tool mounting plate 11 by two-dimensional hobbing cutter fixing bolts 21. There is a preset spacing between the multiple screw holes 14, so that the hobbing cutter blade 20 can realize the function of freely adjusting the blade spacing. Furthermore, the upper frame 1 and the lower frame 5 of the press are both cuboid structures. The support column is set vertically between the upper frame 1 and the lower frame 5 of the press, and is located at the four corners of the upper frame 1 and the lower frame 5 of the press.

[0040] Preferably, such as Figures 1 to 12 As shown, the rock box propulsion assembly provided by the present invention specifically includes a propulsion system 33, a rock box 26, a rock box base 29, and a track 32. The rock box base 29 has a certain longitudinal length; the track 32 is fixedly installed inside the experimental chamber and located on the upper surface of the lower frame 5 of the press; the rock box base 29 is reciprocated on the track 32 via rollers 30; the rock box 26 is installed on the pre-set rock box base 29, and the rock box 26 is equipped with a clamping mechanism that can be used to fix the rock sample 22; furthermore, The propulsion system 33 is located inside the experimental chamber and connected to the rock box base 29, thereby driving the rock box base 29 to move linearly back and forth on the track 32. Further, the rock box 26 is specifically composed of a rock box outer frame, a detachable rock box mounting plate, and a clamping mechanism. The rock box base 29 is equipped with an axle 31, and the axle 31 is equipped with wheels 30, which allows the rock box to move freely along the track 32. The shape of the wheels 30 is similar to that of a train wheel. The cross-sectional shape of the track 32 is similar to that of a train track and is made of I-beams.

[0041] Preferably, such as Figures 1 to 12 As shown, the propulsion system 33 includes a motor 34, an elliptical track 35, and a connecting rod 37. The connecting rod 37 has a gear, and the elliptical track 35 has a gear 36. One end of the connecting rod 37 is connected to the rock box base 29, and the elliptical track 35 is connected to the motor 34 via a transmission connection. The elliptical track 35 meshes with the gear on the connecting rod 37 through its gear 36, thereby enabling the rock box base 29 to move via the connecting rod. Furthermore, when the motor 34 is working, it can drive the internal elliptical track... The circular track 35 rotates, which in turn causes the gear 36 on the elliptical track 35 to drive the gear on the connecting rod 37 to move, thus realizing the linear movement of the rock box 26 on the track 32. Specifically, after the motor 34 is powered on, the internal elliptical track 35 begins to rotate clockwise around the axis. Under the interaction between the gear 36 on the elliptical track 35 and the gear on the connecting rod 37, the rock box 26 will move linearly along the track. At the same time, the three-dimensional cutter 16 acts obliquely on the rock sample 2 to realize the three-dimensional linear cutting test of the cutter.

[0042] Preferably, such as Figures 1 to 12 As shown, the clamping mechanism includes a first loading hydraulic cylinder 23, a first mounting plate 24, a second loading hydraulic cylinder 27, and a second mounting plate 28; the first loading hydraulic cylinder 23 is disposed on the rock box 26 and is capable of lateral extension and retraction, thereby clamping the rock sample 22 through the second mounting plate 28; the second loading hydraulic cylinder 27 is disposed on the rock box 26 and is capable of longitudinal extension and retraction, thereby clamping the rock sample 22 through the first mounting plate 24; further, as Figures 8 to 9As shown, the rock-breaking surface 41 of the rock sample 22 is an inclined surface. The three-dimensional roller cutter 16 or the roller cutter blade 20 acts perpendicularly to the rock-breaking surface 41 on the rock sample 22, thereby achieving rock breaking.

[0043] Preferably, such as Figures 1 to 12 As shown, the experimental platform also includes a rock deformation monitoring device, which specifically includes an LED light 38, a camera 39, and a computer 40. The LED light 38 is respectively set on the left and right sides of the press frame and can illuminate the rock sample 22. The camera 39 is set on the front side of the press frame and can capture images of the rock sample 22 during the rock breaking process. The computer 40 is electrically connected to the camera 39 and can receive the image data from the camera 39 to obtain rock deformation analysis data. Furthermore, the camera 39 is a CD camera and is located directly in front of the rock box 26, connected to the computer 40, to monitor the rock deformation in real time. The rock deformation monitoring system can monitor the rock deformation in real time during the roller rock breaking test, thereby accurately grasping the rock crack change data and facilitating the study of the rock micro-deformation mechanism.

[0044] This invention provides a rock-breaking experimental platform for a vertical shaft tunneling machine's cutterhead. The rock box adopts a modular structure, assembled by splicing fixed workpieces and detachable mounting pieces. This facilitates disassembly while effectively securing the rock, significantly saving space, simplifying operation, and reducing costs. It provides a better platform for in-depth research on cutterheads. This experimental platform can accommodate different cutter shapes, cutter spacings, and cutter installation angles, facilitating research on the effects of different cutter shapes, spacings, and installation angles on cutter stress, wear, rock-breaking efficiency, and specific energy consumption. This fundamentally saves energy, improves rock-breaking efficiency, reduces cutter ring wear, extends cutter life, shortens construction cycles, and ultimately reduces project costs.

[0045] The solution provided by this invention addresses the significant impact of the roller cutter installation angle on rock breaking. It investigates the effects of different installation angles on roller cutter wear, rock breaking efficiency, and specific energy consumption, and designs an adjustable cutter installation angle mechanism to replace existing fixed-angle loading devices. Simultaneously, it designs a roller cutter assembly structure that can switch between two-dimensional penetration and three-dimensional linear cutting, overcoming the limitation of existing test platforms with limited functionality. The rock box is assembled using detachable assembly pieces and fixed by a rock clamping mechanism, enabling rapid assembly and disassembly of rock samples while ensuring the rock does not easily shake during roller cutter loading. Furthermore, real-time monitoring of rock deformation is achieved using rock deformation monitoring equipment, allowing for precise control of rock crack changes and facilitating the study of the rock's micro-deformation mechanism.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0047] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the apparatus embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0048] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A test platform for rock breaking by roller cutter in a vertical shaft tunneling machine, characterized in that, The experimental platform includes a press frame, a vertical loading device, a rock box propulsion assembly, and a cutter mounting mechanism. The vertical loading device is located within the press frame and can extend and retract vertically to apply load. The cutter mounting mechanism is located on the vertical loading device and can extend and retract with it. The rock box propulsion assembly is movably located within the press frame and can move to the bottom of the cutter mounting mechanism. A rock sample (22) can be mounted on the rock box propulsion assembly. The cutter mounting mechanism has a cutter that can move with it to break the rock sample (22) on the rock box propulsion assembly. The press frame includes an upper frame (1) and a lower frame (5); the upper frame (1) and the lower frame (5) are fixedly connected by a support column; an experimental chamber is formed inside the press frame; the vertical loading device includes a loading power component (2) and a loading platform (4); the loading power component (2) is located inside the experimental chamber and is connected to the loading platform (4) via a connector (3); the tool mounting mechanism is located on the loading platform (4) and can adjust the rock-breaking angle of the tool; the two ends of the loading power component (2) are connected horizontally to the two side walls inside the upper frame (1) of the press and can move vertically up and down on the side walls, thereby driving the loading platform (4) to move up and down together; The tool mounting mechanism includes a fixed plate (9), a driving component, a rotating shaft (10), a tool mounting plate (11), and an arc-shaped slide rail (12). The fixed plate (9) is horizontally mounted on the loading platform (4). The tool mounting plate (11) is movably mounted on the fixed plate (9) and forms an angle A with the fixed plate (9). The rotating shaft (10) is mounted on the fixed plate (9) and movably connected to the tool mounting plate (11). The driving component is mounted on the fixed plate (9) and is connected to the rotating shaft (10) to drive the tool mounting plate. The rotating shaft (10) rotates; the rotating shaft (10) can drive the tool mounting plate (11) to rotate, thereby adjusting the included angle A between the tool mounting plate (11) and the fixed plate (9), and thus adjusting the rock breaking angle; one end of the arc slide rail (12) is connected to the tool mounting plate (11), and the other end of the arc slide rail (12) can be detachably connected to the fixed plate (9), thereby positioning the included angle A between the tool mounting plate (11) and the fixed plate (9); the tool is detachably mounted on the tool mounting plate (11) through the tool shaft fixing device (19); The experimental platform also includes LED lights (38), a camera (39), and a computer (40); the LED lights (38) are respectively set on the left and right sides of the press frame and can illuminate the rock sample (22); the camera (39) is set on the front side of the press frame and can capture the rock breaking process of the rock sample (22); the computer (40) is electrically connected to the camera (39) and can receive the image data of the camera (39) to obtain rock deformation analysis data.

2. The shaft boring machine cutter rock-breaking test platform according to claim 1, characterized in that, The loading platform (4) is provided with a fixing fixture (6); the fixing fixture (6) is connected to the loading platform (4) by a guide rail, so that it can move back and forth in the horizontal direction; the fixing plate (9) is fixedly connected to the fixing fixture (6) by connecting bolts (8); the arc slide rail (12) is provided with multiple bolt holes at intervals; one end of the arc slide rail (12) is connected to one end of the tool mounting plate (11) by a third fixing bolt (15), and the arc slide rail (12) is also detachably connected to the fixing plate (9) by connecting bolts passing through the bolt holes.

3. The shaft boring machine cutter rock-breaking test platform according to claim 1, characterized in that, The tool mounting plate (11) is provided with multiple screw holes (14); the tool shaft fixing device (19) includes two connecting columns, which are detachably connected to the screw holes (14) of the tool mounting plate (11) by first fixing bolts (7); a tool shaft (18) is provided between the two connecting columns, which is detachably mounted on the connecting columns and can rotate on the two connecting columns; the tool is detachably fixed on the tool shaft (18) by hob fixing bolts; the tool is a three-dimensional hob (16).

4. The shaft boring machine cutter rock-breaking test platform according to claim 1, characterized in that, The circular arc slide rail (12) is provided with multiple bolt holes at equal intervals, and two adjacent bolt holes are set at a 5° interval from the center of the circular arc slide rail (12); the included angle A between the tool mounting plate (11) and the fixing plate (9) is in the range of 0°-90°.

5. The shaft boring machine cutter rock-breaking test platform according to claim 3, characterized in that, The tool mounting plate (11) is provided with a plurality of screw holes (14) at equal intervals; the tool shaft (18) can be provided with a single three-dimensional hob (16) or a double three-dimensional hob (16); the upper frame (1) and the lower frame (5) of the press are respectively cuboid structures, and the support column is arranged vertically between the upper frame (1) and the lower frame (5) of the press, and is located at the four corners of the upper frame (1) and the lower frame (5) of the press.

6. The shaft boring machine cutter rock-breaking test platform according to claim 1, characterized in that, The rock box propulsion assembly includes a propulsion system (33), a rock box (26), a rock box base (29), and a track (32); the track (32) is fixedly installed in the experimental chamber and located on the upper surface of the lower frame (5) of the press; the rock box base (29) is reciprocated on the track (32) by rollers (30); the rock box (26) is installed on the rock box base (29) and a clamping mechanism is provided on the rock box (26), which can be used to fix the rock sample (22); the propulsion system (33) is installed in the experimental chamber and connected to the rock box base (29), thereby driving the rock box base (29) to move linearly back and forth on the track (32).

7. The shaft boring machine cutter rock-breaking test platform according to claim 6, characterized in that, The propulsion system (33) includes a motor (34), an elliptical track (35), and a connecting rod (37); the connecting rod (37) is equipped with a gear, and the elliptical track (35) is equipped with a gear (36); one end of the connecting rod (37) is connected to the rock box base (29), and the elliptical track (35) is connected to the motor (34) via a transmission; the elliptical track (35) meshes with the gear on the connecting rod (37) through its gear (36), thereby enabling the rock box base (29) to move via the connecting rod; the clamping mechanism includes a first loading fluid. The rock sample consists of a hydraulic cylinder (23), a first mounting plate (24), a second loading hydraulic cylinder (27), and a second mounting plate (28). The first loading hydraulic cylinder (23) is located in the rock box (26) and can extend and retract laterally, thereby clamping the rock sample (22) through the second mounting plate (28). The second loading hydraulic cylinder (27) is located in the rock box (26) and can extend and retract longitudinally, thereby clamping the rock sample (22) through the first mounting plate (24). The rock breaking surface of the rock sample (22) is an inclined surface, and the cutting tool acts perpendicular to the rock breaking surface on the rock breaking surface.

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