A device and system for simulating the rock breaking process of a roller cutter using a plurality of cutter teeth

Abstract

The present invention provides a device and system for simulating the rock-breaking process of a roller cutter with a plurality of cutter teeth, which belongs to the technical field of roller cutter rock-breaking test, and is used to solve the problem that the test devices for rolling rock-breaking in the prior art are often bulky and have high construction and operation costs. The device includes a rock fixing assembly, a specimen rod, a telescopic power unit and a translational motion unit; the head end of the specimen rod is provided with cutter teeth, and the tail end is connected to the output shaft end of the telescopic power unit, and the axes of the specimen rod and the telescopic power unit coincide; the shell of the telescopic power unit is connected to the output shaft of the translational motion unit, and the telescopic power unit is driven to translate by the translational motion unit; the rock fixing assembly is arranged in the direction of the head end of the specimen rod, the telescopic direction points to the rock surface, and the translation direction is parallel to the rock surface. The device combined with the system significantly reduces the volume and cost of the test device. The mechanism of rock-breaking by the roller cutter can be accurately restored without a complete roller cutter, providing a convenient and efficient experimental platform for in-depth research on the rock crushing process.

Description

Technical Field

[0001] The invention belongs to the technical field of roller cutter rock breaking test, and in particular relates to a device and a system for simulating a roller cutter rock breaking process by using a plurality of cutter teeth. Background Art

[0002] In tunnel excavation and other projects, the shield machine cutter is a key component that effectively crushes rocks through rolling and cutting, greatly improving construction efficiency. However, the complex interaction between the cutter and the rock, especially the rock breaking mechanism under deep high-stress environment, has not been fully revealed, which has become a key factor restricting engineering efficiency and cost control.

[0003] Due to the large size of the roller cutter, the test device for direct rolling rock breaking is often bulky, which not only increases the difficulty of the experiment, but also limits the diversity of test methods. In addition, the construction and operation costs of large-scale test devices are high, and the operation is complicated, which is not conducive to the extensive development of scientific research and teaching. In view of this, it is particularly important to develop a test device that can simulate the pure rolling and complex motion forms of the local cutter bar of the roller cutter. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a device and system for simulating the rock breaking process of a roller cutter using a plurality of cutter teeth, so as to solve the problem that the experimental devices for rolling rock breaking in the prior art are often bulky and have high construction and operation costs.

[0005] To achieve the above-mentioned and other related purposes, the present invention provides a device and system for simulating the rock breaking process of a roller cutter using a plurality of cutter teeth.

[0006] Among them, a device for simulating the rock breaking process of a roller cutter using a plurality of cutter teeth comprises:

[0007] Rock fixing assembly, specimen rod, telescopic power unit and translational motion unit;

[0008] The head end of the test rod is provided with a detachable blade tooth, the tail end of the test rod is connected to the output shaft end of the telescopic power unit, and the axes of the test rod and the telescopic power unit coincide, and the direction of the telescopic axis is defined as the first axis;

[0009] The housing of the telescopic power unit is connected to the output shaft of the translation motion unit, and the translation motion unit drives the telescopic power unit to translate, and the direction of the translation axis is defined as a second axis;

[0010] The rock fixing assembly is arranged at the head end direction of the specimen rod, the first axis and the second axis form a working plane of the specimen rod, the first axis points to the rock surface, and the second axis is parallel to the rock surface.

[0011] Optionally, the rock fixing assembly comprises a base, a side shell and a top cover;

[0012] The side shell and the base are connected to form a cavity with an open top, and the cavity is used to place the rock sample. The top cover is detachably arranged on the top of the side shell, and the top cover presses the top of the rock sample. The top cover is provided with a through area, and the head end of the specimen rod passes through the through area and contacts the rock sample.

[0013] Optionally, a side gap is left around the rock sample and the side shell;

[0014] The rock fixing assembly housing is provided with a first hydraulic hole that penetrates through the rock fixing assembly, and an outlet of the first hydraulic hole in the rock fixing assembly is located within the side clearance range.

[0015] Optionally, a raised cavity is provided on the upper surface of the base, a slidingly matched piston is provided in the raised cavity, a bottom gap is formed between the bottom of the piston and the raised cavity, and the top of the piston bears the rock sample;

[0016] A penetrating second hydraulic hole is provided on the base, and an outlet of the second hydraulic hole in the rock fixing assembly is located within the bottom gap range.

[0017] Optionally, a sealing layer connected as a whole is provided at the contact portion between the top of the rock sample and the top cover, around the rock sample, and at the contact portion between the bottom of the rock sample and the piston.

[0018] Optionally, it also includes a rotational motion unit;

[0019] The rotary motion part includes a rotary power source, a rotary shaft and a movable mounting frame;

[0020] The rotating shaft is driven by the rotating power source, both ends of the rotating shaft are rotatably connected to the movable mounting frame, the housing of the telescopic power unit is fixedly connected to the rotating shaft, and the rotating plane of the telescopic power unit coincides with the working plane;

[0021] The translation motion part comprises a translation power source and a fixed mounting frame, the movable mounting frame is slidably mounted on the fixed mounting frame, and the translation power source pushes the movable mounting frame to slide along the second axis.

[0022] Optionally, a torque sensor for detecting the torque of the rotating shaft is provided in the rotating motion part;

[0023] The telescopic power unit is provided with a first load sensor for detecting the telescopic load;

[0024] The translation motion part is provided with a second load sensor for detecting the translation push load.

[0025] Optionally, the side shell is made of a material that can be seen through X-rays.

[0026] Optionally, the telescopic power unit is an electric telescopic cylinder or a fluid telescopic cylinder;

[0027] The translational power source is an electric telescopic cylinder or a fluid telescopic cylinder.

[0028] Among them, a system for simulating the rock breaking process of a roller cutter using a plurality of cutter teeth includes a device for simulating the rock breaking of a large-sized roller cutter using a small-sized specimen as described above;

[0029] It also includes an X-ray machine and a hydraulic system;

[0030] The photographing direction of the X-ray machine is toward the rock fixing assembly;

[0031] The hydraulic source of the hydraulic system is connected to the first hydraulic hole and the second hydraulic hole, and applies side pressure and bottom pressure to the rock sample respectively.

[0032] As described above, the device and system of the present invention for simulating the rock breaking process of a roller cutter using a plurality of cutter teeth have at least the following beneficial effects:

[0033] The use of a small cutter bar to simulate the real rolling and complex movement of the hob cutter teeth significantly reduces the size and cost of the test device. The hob rock breaking mechanism can be accurately restored without a complete hob, providing a convenient and efficient experimental platform for in-depth research on the rock crushing process. This technology not only promotes the flexibility of scientific research and teaching, but also accelerates technical optimization and efficiency improvement in engineering practice. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Shown is an overall schematic diagram of the present invention.

[0035] Figure 2 It is a schematic diagram showing another perspective of the present invention as a whole.

[0036] Figure 3 Shown is a schematic diagram of the disassembly of the main components of the present invention.

[0037] Figure 4 Shown is a schematic diagram of a rock fixing assembly of the present invention.

[0038] Figure 5 Shown is a schematic cross-sectional view of the working area of ​​the specimen rod of the present invention.

[0039] Figure 6 Shown is a schematic diagram of the movable mounting frame of the present invention.

[0040] Figure 7 It shows a schematic diagram of rock breaking by the test piece rod of the present invention.

[0041] Figure 8 It is a schematic diagram showing the principle of the test piece rod simulating a hob according to the present invention.

[0042] Among them: rock fixing assembly 1, base 11, side shell 12, top cover 13, first hydraulic hole 14, second hydraulic hole 15, piston 16, specimen rod 2, telescopic power unit 3, translational motion unit 4, translational motion source 41, fixed mounting frame 42, rotational motion unit 5, rotational power source 51, rotation axis 52, movable mounting frame 53, bearing block 531, thrust plate 532, reaction cylinder 533, rock specimen 6, side gap 71, bottom gap 72, X-ray machine 8, structural plate 91, slide rail 92, slider 93. DETAILED DESCRIPTION

[0043] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0044] See also Figures 1 to 8 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0045] The following embodiments are only for illustration purposes and can be combined with each other, and are not limited to the contents presented in the following single embodiments.

[0046] See also Figure 1-Figure 8 , the present invention provides an embodiment of a device and system for simulating a rock breaking process of a roller cutter using a plurality of cutter teeth. In each of the drawings, two types of guide lines, one with an arrow and one without an arrow, are used to make the markings clearer. The main differences are as follows:

[0047] ① Used to distinguish the whole and parts of a component, such as Figure 1 In the figure, the arrow 4 points to a telescopic cylinder assembly, but it represents the entire translation motion part 4 (including the telescopic cylinder assembly); Figure 6 In the figure, 41 without arrows points to the same telescopic cylinder assembly, which only represents the translational force source 41, that is, the telescopic cylinder itself;

[0048] ②Used to distinguish specific structures and spaces, such as Figure 4 In the figure, the side gap 71 and the bottom gap 72 do not represent specific structures, but are empty spaces between structures, and the arrows point to the space areas;

[0049] ③ Figure 8 In the figure, the terminal arrow is used to distinguish the solid line of the structure itself, making the direction more precise and clear.

[0050] Among them, a device for simulating the rock breaking process of a roller cutter using a plurality of cutter teeth comprises:

[0051] Rock fixing assembly 1, specimen rod 2, telescopic power unit 3 and translation motion unit 4;

[0052] The head end of the test rod 2 is provided with a detachable blade, the tail end of the test rod 2 is connected to the output shaft end of the telescopic power unit 3, and the axes of the test rod 2 and the telescopic power unit 3 coincide, and the telescopic axis direction is defined as the first axis, that is, Figure 7 or Figure 8 The Y axis shown. The specimen rod can be understood as being simplified from a certain tooth on a real hob and the area within a certain range on both sides of the radius where it is located. The specimen rod does not have to be rod-shaped. For example, when the end of the specimen rod simulates only one tooth, a rod shape will be a preferred solution. However, if the end of the specimen rod simulates multiple teeth, a fan-shaped specimen rod will be a more appropriate solution;

[0053] The housing of the telescopic power unit 3 is connected to the output shaft of the translation motion unit 4, and the translation motion unit 4 drives the telescopic power unit 3 to translate, and the translation axis direction is defined as the second axis, that is, Figure 7 or Figure 8 The X-axis shown;

[0054] The rock fixing assembly 1 is arranged at the head end direction of the specimen rod 2, and the first axis and the second axis form a working plane of the specimen rod 2, the first axis points to the rock surface, and the second axis is parallel to the rock surface.

[0055] The main working principles of the above embodiment are as follows:

[0056] The length of the test rod 2 can be set as required, and the cutter teeth at the head end of the test rod 2 can be set to the same specifications and models according to the hob cutter to be simulated, such as conical wedge teeth, conical ball teeth, etc. The rock sample in the rock fixing assembly 1 can be sampled from the actual engineering site, or a sample with specific performance parameters can be made of materials such as concrete;

[0057] Before conducting a rock-breaking simulation with a roller cutter, first confirm the diameter of the target roller cutter. The common size of a shield machine roller cutter is 8-19 inches, which means the diameter is approximately in the range of 200mm-500mm. There are many cost and technical limitations in using a real roller cutter for rock breaking.

[0058] After confirming the target hob diameter to be simulated, Figure 8 As shown, the center of the simulated roller cutter is point B, and a point on the circumference of the simulated roller cutter is point A; a point C is determined on the radius BA, and the distance between point C and point A is equal to the actual length of the specimen cutter rod; the motion parameters of point C when the simulated roller cutter actually rolls and breaks rocks are obtained. Figure 7 and Figure 8 Point A in is the same point. Figure 7 and Figure 8 Point C in is the same point.

[0059] Then, a rock sample is set at the head end of the specimen cutter bar, and the same motion parameters as point C are given to the tail end of the specimen cutter bar. Then the motion parameters of the head end of the specimen cutter bar will be consistent with the motion parameters of point A on the circumference of the disc cutter, thereby achieving the purpose of using a small-sized specimen to simulate the rock breaking of a large-sized disc cutter.

[0060] Specifically, considering that the movement of point A on the hob circumference is always on the same plane, which is referred to as the working plane in the previous text, the complex movement parameters of point A can be decomposed into the X-axis and Y-axis in the working plane. The translation motion unit 4 controls the movement component of the end of the test rod 2 in the X-axis direction, and the telescopic power unit 3 controls the movement component of the end of the test rod 2 in the Y-axis direction, so that the end of the test rod 2 simulates any movement trajectory of point C in the working plane on the working plane, and then the head end of the test rod 2 simulates any movement trajectory of point A on the hob circumference in the working plane on the working plane, that is, the tooth trajectory of the head end of the test rod 2 is consistent with the movement trajectory of point A on the hob circumference.

[0061] The motion information of point C on the roller cutter can be obtained by setting up sensor detection when the shield machine is working, or it can be obtained by calculation through computer simulation software, or it can be obtained by manual calculation. It is not the focus of this embodiment. In short, the motion information of point C on the roller cutter in the working plane is obtained and assigned to the end of the specimen rod 2 to simulate the motion state of point A on the edge of the roller cutter.

[0062] The beneficial effects of the above embodiments include: by introducing a specially designed control device and a matching control method, an accurate simulation of the rolling rock breaking process of large rollers of various sizes is achieved under the conditions of a smaller device and a shorter test rod. This process does not require physically reducing the size of the roller or replacing the test tool, but simulates the working effect of rollers of different radii by precisely controlling the motion trajectory of the test rod. This method not only significantly reduces the difficulty and cost of the experiment, but also improves the flexibility and repeatability of the experiment, providing strong support for the research and development and optimization of roller technology, and accelerating the pace of engineering application of scientific research results.

[0063] This embodiment can be found in Figure 4, the rock fixing assembly 1 comprises a base 11, a side shell 12 and a top cover 13;

[0064] The side shell 12 and the base 11 are connected to form a cavity with an open top, and the cavity is used to place the rock sample 6. The top cover 13 is detachably arranged on the top of the side shell 12, and the top cover 13 presses the top peripheral range of the rock sample 6. A through area is arranged on the top cover 13, and the head end of the specimen rod 2 passes through the through area and contacts the rock sample 6.

[0065] In the above embodiment, the working process is as follows: the rock fixing assembly 1 is fixed as a whole. Before the test, the top cover 13 is removed, the rock sample is placed, and then the top cover 13 is reinstalled and the rock sample is pressed and fixed. During the simulation experiment, the specimen rod 2 contacts the upper surface of the rock sample 6 from the penetration area of ​​the top cover 13 to squeeze and destroy the rock sample. Since the rock fixing assembly is an enclosed and closed structure as a whole, even if the rock sample or the teeth of the specimen rod 2 are broken due to the huge rock breaking force, the detached objects cannot fly out of the rock fixing assembly, thereby greatly improving the safety of the simulation test.

[0066] Furthermore, if Figure 4 As shown, a side gap 71 is left around the rock sample 6 and the side shell 12;

[0067] A first hydraulic hole 14 is provided on the shell of the rock fixing component 1. The outlet of the first hydraulic hole 14 in the rock fixing component 1 is located within the range of the side gap 71. The first hydraulic hole 14 can be provided on the base 11.

[0068] A raised cavity is provided on the upper surface of the base 11, a piston 16 is provided in the raised cavity for sliding fit, a bottom gap 72 is formed between the bottom of the piston 16 and the raised cavity, and the top of the piston 16 bears the rock sample 6;

[0069] A penetrating second hydraulic hole 15 is provided on the base 11 , and an outlet of the second hydraulic hole 15 in the rock fixing assembly 1 is located within the bottom gap 72 .

[0070] In the above embodiment, a sealing structure should be provided between the base 11, the side housing 12, the piston 16 and other components to ensure that the sealing strength is higher than the sample pressure environment to be simulated.

[0071] The design cleverly sets side gaps around the rock sample and between the side shell, and is equipped with a first hydraulic hole to adjust the lateral pressure. At the same time, the raised cavity on the base and the piston form a bottom gap, and the bottom pressure is regulated by the second hydraulic hole, thus achieving a multi-dimensional and accurate pressure environment simulation for the rock sample. The lateral pressure and bottom pressure can be controlled independently and set according to the actual geological conditions. In the process of simulating the rock breaking of the shield cutter, this design not only improves the authenticity and accuracy of the experiment, but also ensures the stability and safety of the sample under extreme stress conditions, providing strong experimental support for the performance optimization and failure analysis of the shield cutter.

[0072] Furthermore, a sealing layer connected to form an integral whole is provided at the contact part between the top of the rock sample 6 and the top cover 13, around the rock sample 6, and at the contact part between the bottom of the rock sample 6 and the piston 16. A barrel-shaped elastic rubber sealing material or a heat shrinkable sealing material can be used, and after the rock sample is loaded into the sealing layer, the whole is placed in the rock fixing assembly 1, and then the top of the barrel-shaped sealing layer covers the outer ring part of the top of the rock sample and the top cover 13 presses this part of the area, thereby forming a sealed state at the bottom and around the rock sample, while the center area of ​​the top of the rock sample is not covered by the sealing layer so as to be squeezed and damaged by the specimen rod 2.

[0073] By introducing the overall sealing layer design, the top outer ring, surroundings and bottom of the rock sample are effectively sealed, ensuring that the confining pressure fluid cannot penetrate into the surface and interior of the rock, thereby greatly improving the accuracy and reliability of the simulation experiment. This design not only simplifies the operation process and allows for rapid installation and removal of rock samples, but also ensures the stability and controllability of the pressure environment during the experiment, providing more precise experimental conditions for the study of complex mechanical behaviors such as shield machine cutter rock breaking.

[0074] For this example, please refer to Figure 1-Figure 6 , and also includes a rotational motion part 5. Figure 6 For example, the rotary motion part 5 includes a rotary power source 51, a rotary shaft 52 and a movable mounting frame 53, and the movable mounting frame 53 includes two bearing blocks 531 and a thrust plate 532 connecting the bearing blocks 531 into one body;

[0075] The rotating shaft 52 is driven by the rotating power source 51. In order to increase the torque, a reducer can be arranged in the middle. The two ends of the rotating shaft 52 are rotatably connected to the bearing blocks 531 of the movable mounting frame 53. The housing of the telescopic power unit 3 is fixedly connected to the rotating shaft 52. The rotating plane of the telescopic power unit 3 coincides with the working plane. Specifically, Figure 3As shown, the rotating shaft 52 is fixedly provided with a structural plate 91 in the middle area between the two bearing blocks 531 of the movable mounting frame 53. The structural plate 91 is provided with a through cavity, and the telescopic power unit 3 is installed in the cavity. When the rotating power source drives the rotating shaft to rotate, the structural plate 91 also rotates, and then the telescopic power unit 3 rotates, so that the test piece rod 2 connected to the output shaft of the telescopic power unit 3 also rotates;

[0076] The translation motion part 4 includes a translation power source 41 and a fixed mounting frame 42, and a movable mounting frame 53 is slidably mounted on the fixed mounting frame 42. The translation power source 41 pushes the movable mounting frame 53 to slide along the second axis. Specifically, a slide rail 92 is installed on the fixed mounting frame 42, and a matching slider 93 is installed on the movable mounting frame 53. The output shaft of the translation power source 41 is connected to the thrust plate 532. When the output shaft of the translation power source 41 is extended or retracted, the movable mounting frame 53 will be driven to move along the slide rail. The housing of the reducer connected to the rotating shaft 52 can be connected to the movable mounting frame 53 as a whole and slide with the movable mounting frame 53. The reaction cylinder 533 can be used for connection to enhance the stability of the structure. At the same time, the rotation power source 51 as the input of the reducer also needs to be able to slide with the movable mounting frame 53, so it cannot be fixedly installed on the ground, but the housing of the rotation power source 51 can be fixedly connected to the reducer, and the input shaft and output shaft of the reducer should have different orientations, such as vertical. That is, the input shaft of the speed reducer connected to the rotary power source 51 and the output shaft connected to the rotary shaft 52 have a perpendicular axial direction.

[0077] This embodiment realizes multi-dimensional flexible control of the telescopic power unit and the specimen rod by integrating the translational motion unit and the rotational motion unit. The working principle is that the translational motion unit drives the movable mounting frame to slide along the slide rail, thereby driving the rotational motion unit and the telescopic power unit to translate as a whole; the rotational motion unit drives the rotating shaft through the rotational power source, so that the telescopic power unit and the specimen rod rotate around the rotating shaft. This design enables the specimen rod to simulate rock breaking according to a preset trajectory at any point on the outer diameter of the simulated roller cutter, and at the same time introduces complex control parameters such as the initial angle of the roller cutter, which improves the flexibility and accuracy of the experiment.

[0078] The simulation capability and control accuracy of the experiment have been significantly enhanced, which is helpful for a more comprehensive study of the rock breaking mechanism of the roller cutter and provides strong support for the design and optimization of related projects. In addition, the compact structure and ingenious design have improved the overall stability and durability of the equipment.

[0079] In this embodiment, the rotational motion part 5 is provided with a torque sensor for detecting the torque of the rotating shaft 52; the telescopic power part 3 is provided with a first load sensor for detecting the telescopic load; and the translational motion part 4 is provided with a second load sensor for detecting the translational push load.

[0080] Among them, torque sensors, also known as torque sensors, torque sensors, torque sensors, torque meters, etc., are of various types. Taking a non-contact torque sensor as an example, it is connected between the input shaft and the output shaft, with splines on the input shaft and keyways on the output shaft. When the input shaft drives the output shaft through the torque sensor body and is twisted by the torque, the relative position between the splines on the input shaft and the keyways on the output shaft is changed. The change in relative displacement of the splines and the keyways is equal to the twisting amount of the torsion bar, which changes the magnetic induction intensity on the splines. The change in magnetic induction intensity is converted into a voltage signal through a coil, thereby detecting the torque. In this embodiment, the torque sensor can be arranged at the coupling between the reducer and the rotating shaft 52, such as Figure 3 As shown, the torque sensor is located in the reaction cylinder 533 and can detect the interaction between the rock sample and the specimen rod 2.

[0081] The first load sensor and the second load sensor are both axial load sensors, which are used to measure and detect the force exerted on the object in the axial direction and convert it into a processable electrical signal. Taking the second load sensor as an example, Figure 6 As shown, in order to detect the thrust of the translational force source 41 on the member rod 2 along the X-axis direction, a second load sensor can be set at the connection interface between the output shaft of the translational force source 41 and the movable mounting frame 53, thereby detecting the thrust or pulling force of the output shaft of the translational force source 41 on the movable mounting frame 53.

[0082] Sensors play a key role in rock breaking tests, providing detailed mechanical data support by accurately measuring the torque of the rotating shaft, the telescopic load, and the translational push load. The torque sensor monitors the interaction force between the rock sample and the specimen rod, while the first and second load sensors monitor the changes in the axial load during the telescopic and translational processes, respectively. These real-time and accurate data not only improve the accuracy and reliability of the test, but also provide a scientific basis for analyzing the rock breaking mechanism and optimizing the equipment design, significantly enhancing the scientific research value and application effect of the rock breaking test.

[0083] In this embodiment, the side shell 12 is made of a material that can be seen through X-rays. The side shell 12 uses X-ray see-through materials, which greatly improves the observation ability of the roller cutter rock breaking test. During the rock breaking process, the X-ray machine can easily penetrate the side shell to capture key information such as the generation, expansion direction and depth of cracks inside the rock, providing researchers with intuitive and detailed dynamic images of rock damage. This design not only enhances the accuracy and comprehensiveness of the test data, but also accelerates the research process of the rock breaking mechanism, and has immeasurable value in improving rock breaking efficiency and optimizing tool design.

[0084] In this embodiment, the telescopic power unit 3 is an electric telescopic cylinder or a fluid telescopic cylinder; the translational power source 41 is an electric telescopic cylinder or a fluid telescopic cylinder. Of course, mechanisms such as screw rods and threads can also be used to achieve telescopic or translational movement.

[0085] This embodiment is an embodiment of a system that uses a plurality of cutter teeth to simulate the rock breaking process of a roller cutter. Figure 7 , including a device as described above for simulating a rock breaking process of a roller cutter using a plurality of cutter teeth;

[0086] It also includes an X-ray machine 8 and a hydraulic system;

[0087] The photographing direction of the X-ray machine 8 is toward the rock fixing assembly 1, and is used to identify cracks formed during the rolling process of the rock;

[0088] The hydraulic source of the hydraulic system is connected to the first hydraulic hole 14 and the second hydraulic hole 15, and applies side pressure and bottom pressure to the rock sample 6 respectively. The hydraulic system provides driving force for the telescopic cylinder and also provides simulated surrounding rock environment pressure for the side and bottom of the rock sample 6.

[0089] This system integrates electric or fluid telescopic cylinders, X-ray machines and hydraulic systems to achieve accurate simulation of the rock breaking process of large-sized roller cutters with small-sized specimens. The X-ray machine monitors crack changes in real time, improving the intuitiveness and accuracy of test data. The hydraulic system not only drives the telescopic cylinder to work, but also simulates the actual stress environment of the rock, enhancing the authenticity and reliability of the test. The system effectively reduces research costs and accelerates the development of rock breaking technology.

[0090] In summary, the present invention effectively overcomes various shortcomings in the prior art, can produce beneficial technical effects, and has significant progress.

[0091] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A device for simulating the rock breaking process of a roller cutter using a plurality of cutter teeth, characterized in that: include: A rock fixing assembly (1), a specimen rod (2), a telescopic power unit (3) and a translational motion unit (4); The head end of the test rod (2) is provided with detachable cutting teeth, the tail end of the test rod (2) is connected to the output shaft end of the telescopic power part (3), and the axes of the test rod (2) and the telescopic power part (3) coincide with each other, and the direction of the telescopic axis is defined as the first axis; The shell of the telescopic power part (3) is connected to the output shaft of the translation motion part (4), and the translation motion part (4) drives the telescopic power part (3) to translate, and the direction of the translation axis is defined as the second axis; The rock fixing assembly (1) is arranged at the head end direction of the specimen rod (2), the first axis and the second axis form a working plane of the specimen rod (2), the first axis points to the rock surface, and the second axis is parallel to the rock surface; It also includes a rotational motion unit (5); The rotary motion part (5) comprises a rotary power source (51), a rotary shaft (52) and a movable mounting frame (53); The rotating shaft (52) is driven by the rotating power source (51), both ends of the rotating shaft (52) are rotatably connected to the movable mounting frame (53), the housing of the telescopic power unit (3) is fixedly connected to the rotating shaft (52), and the rotating plane of the telescopic power unit (3) coincides with the working plane; The translational motion part (4) comprises a translational power source (41) and a fixed mounting frame (42), the movable mounting frame (53) is slidably mounted on the fixed mounting frame (42), and the translational power source (41) pushes the movable mounting frame (53) to slide along the second axis.

2. A device for simulating a rock breaking process of a roller cutter using a plurality of cutter teeth as claimed in claim 1, characterized in that: The rock fixing assembly (1) comprises a base (11), a side shell (12) and a top cover (13); The side shell (12) and the base (11) are connected to form a cavity with an open top, the cavity being used to place a rock sample (6), the top cover (13) being detachably arranged on the top of the side shell (12), the top cover (13) pressing the top of the rock sample (6), the top cover (13) being provided with a through area, the head end of the specimen rod (2) passing through the through area to contact the rock sample (6).

3. A device for simulating the rock breaking process of a roller cutter using a plurality of cutter teeth as claimed in claim 2, characterized in that: A side gap (71) is left around the rock sample (6) and the side shell (12); The shell of the rock fixing component (1) is provided with a penetrating first hydraulic hole (14), and an outlet of the first hydraulic hole (14) in the rock fixing component (1) is located within the range of the side gap (71).

4. A device for simulating a rock breaking process of a roller cutter using a plurality of cutter teeth as claimed in claim 2, characterized in that: The upper surface of the base (11) is provided with a raised cavity, a slidably fitted piston (16) is provided in the raised cavity, a bottom gap (72) is formed between the bottom of the piston (16) and the raised cavity, and the top of the piston (16) bears the rock sample (6); The base (11) is provided with a penetrating second hydraulic hole (15), and an outlet of the second hydraulic hole (15) in the rock fixing assembly (1) is located within the range of the bottom gap (72).

5. A device for simulating a rock breaking process of a roller cutter using a plurality of cutter teeth as claimed in claim 4, characterized in that: The contact area between the top of the rock sample (6) and the top cover (13), the periphery of the rock sample (6), and the contact area between the bottom of the rock sample (6) and the piston (16) are provided with sealing layers connected to form an integral whole.

6. The device for simulating the rock breaking process of a roller cutter using a plurality of cutter teeth as claimed in claim 1, characterized in that: The rotary motion part (5) is provided with a torque sensor for detecting the torque of the rotary shaft (52); The telescopic power unit (3) is provided with a first load sensor for detecting the telescopic load; The translation motion part (4) is provided with a second load sensor for detecting the translation push load.

7. A device for simulating a rock breaking process of a roller cutter using a plurality of cutter teeth as claimed in claim 2, characterized in that: The side shell (12) is made of a material that can be seen through X-rays.

8. The device for simulating the rock breaking process of a roller cutter using a plurality of cutter teeth as claimed in claim 1, characterized in that: The telescopic power unit (3) is an electric telescopic cylinder or a fluid telescopic cylinder; The translational power source (41) is an electric telescopic cylinder or a fluid telescopic cylinder.

9. A system using a plurality of cutter teeth to simulate the rock breaking process of a roller cutter, characterized in that: A device for simulating a rock breaking process of a roller cutter using a plurality of cutter teeth as described in any one of claims 1 to 8; Also includes an X-ray machine (8) and a hydraulic system; The photographing direction of the X-ray machine (8) is toward the rock fixing assembly (1); The hydraulic source of the hydraulic system is connected to the first hydraulic hole (14) and the second hydraulic hole (15), and applies side pressure and bottom pressure to the rock sample (6) respectively.

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