Disc type hobbing cutter composite rock breaking test bed and test method

Abstract

The application discloses a disc-type hobbing cutter composite rock breaking test bed and a test method, and relates to the technical field of rock breaking test beds.

Description

A disc-shaped roller cutter composite rock breaking test bench and test method Technical Field

[0001] This invention relates to a rock-breaking test device, specifically to a disc-shaped roller cutter composite rock-breaking test bench and test method. Background Technology

[0002] In recent years, with the continuous development of the tunnel field, composite rock breaking technology has gradually replaced the traditional single-roller rock breaking method in large tunnel construction, becoming a hot research topic for scholars at home and abroad. However, most of the composite rock breaking technologies proposed so far are still in their initial stages, and their rock breaking mechanisms still need to be explored in depth through experimental methods. Currently, various types of disc-shaped roller rock breaking test benches have been developed or designed at home and abroad to study the rock breaking law of roller cutters. Central South University's invention patent CN101446537A, entitled "An Adjustable Multi-Roller Cutting Rock Breaking Test Device," uses a disc-shaped roller cutter line cutting rock breaking method, on which multiple roller cutters can be installed to simulate multiple roller cutters cutting rock at different cutter spacings; Central South University's invention patent CN116067819A, entitled "A Multi-Roller Rotation Rolling Rock Breaking Test Bench and Test Method under High Stress Conditions," has hydraulic cylinders arranged around the rock to apply confining pressure, thereby simulating multiple roller cutters rotating and cutting rock under different confining pressures; Shenyang... The invention patent CN101782490A from Jianzhu University is titled "Comprehensive Test Bench for Double Roller Cutter Rock Crushing." This test bench features a high and adjustable roller crushing speed, which can more realistically simulate the rock-breaking process of a disc-shaped roller cutter. The invention patent CN111101962A from Shenyang Jianzhu University is titled "A Multi-Purpose Roller Cutter Disc Test Bench and Operating Method." This test bench adopts a circular cross-section cutter disc structure and uses a motor to drive a ball screw to move the roller base, thereby changing the position of the roller cutter on the cutter disc. Therefore, it can more realistically simulate the rock-breaking process of roller cutters located at different positions on the cutter disc. Furthermore, this test bench can control the inclination angle of the cutter rollers, thereby studying the influence of different cutter roller inclination angles on rock-breaking performance. China Railway Tunnel Equipment Manufacturing Co., Ltd.'s invention patent CN102788693A, entitled "Shield and TBM Cutter Roller Test Bench," describes a test bench whose main unit can switch between vertical and horizontal states, thus simulating cutter roller rotation and rock-breaking under different working conditions. Southwest Jiaotong University's invention patent CN111091747A, entitled "A Multifunctional Test Bench for TBM Cutter Rollers," describes a test bench equipped with a detachable cutter system, including a full-size cutter system or a scaled-down cutterhead system. Therefore, it can perform rotation and linear rock breaking with full-size and scaled-down cutters; Southwest Jiaotong University invention patent CN111157389A, entitled: A TBM rock breaking test bench with linear / rotation dual modes, which can switch between the roller cutter linear rock breaking mode and the rotary cutter rock breaking mode to simulate the rock breaking process of the roller cutter located at different positions on the real cutter head; Xiangtan University invention patent CN109506926B, entitled: A TBM roller cutter rock breaking test bench, in which the main unit of the test bench is placed horizontally, and the roller cutter linear rock breaking and rotary cutter rock breaking can be realized by adjusting the position of the material bin.Furthermore, this test bench can control the switching between free-face and non-free-face rock breaking test modes by changing the rock mounting base; Xiangtan University's invention patent CN109506927B, entitled "A Rock Material Bin and TBM Roller Cutter Rotary Rock Breaking Test Bench," adopts a vertical structure and can also switch between roller cutter line cutting and rotary cutting rock breaking modes, as well as between free-face and non-free-face rock breaking test modes; Jilin University's invention patent CN110715869A, entitled "Hard Rock Tunneling Roller Cutter Rotary Cutting Test Bench," allows for free adjustment of the cutter distance angle between 60°, 120°, and 180°, and can pressurize and heat the rock through a confining pressure and temperature loading unit, thereby restoring the rock to its original state. The invention patent CN111076915A from China Railway High-Speed ​​Industry Co., Ltd., entitled "A Horizontal Linear Structure Shield TBM Rock Breaking Test Bench," utilizes a horizontal structure to more realistically simulate the actual working conditions of roller cutter rock breaking. Furthermore, the rock debris cut by the roller cutter falls off under gravity, avoiding the interference of rock debris during the roller cutting process that occurs in vertical structure test benches. The invention patent CN113504144A from China Railway Engineering Services Co., Ltd., entitled "A Double-Blade Linear TBM Rock Breaking Test Bench," employs a horizontal structure and features an ultra-long-distance rock box module, enabling ultra-long-distance high-speed cutting of rock by the roller cutter. However, these test benches can only conduct traditional roller cutter rock breaking experiments and cannot explore new rock breaking methods.To address this deficiency, Central South University's invention patent CN103969141A, based on a disc-type roller cutter wire cutting test bench, adds an impact hydraulic cylinder between the roller cutter and the vertical hydraulic cylinder. By increasing the impact load during the roller cutter's rock-cutting process, it can achieve combined rock-breaking by the disc-type roller cutter's rolling and impact. Xiangtan University's invention patent CN109506925B, based on a disc-type roller cutter wire cutting test bench, adds a movable crossbeam between the vertical hydraulic cylinder and the roller cutter holder, and installs an air hammer or hydraulic cylinder as a vibrator on the movable crossbeam, thereby achieving combined dynamic and static load crushing by the TBM roller cutter. Rock breaking; Chang'an University's utility model patent CN214251869U achieves composite rock breaking by installing an impact hammer on the cutter holder; Hunan Institute of Engineering's invention patent CN114235458A installs three height-adjustable cutter holders on a rotary cutter rock breaking indoor test device, and installs a water jet, a disc cutter, and a scraper on the three cutter holders respectively, thereby achieving water jet-TBM rotary cutter coupled rock breaking; China Railway Engineering Equipment Group Co., Ltd.'s invention patent CN113338973A installs a laser and a high-pressure nozzle on the test bench frame, thus enabling laser ablation, Combined water jet cutting and roller cutting for rock breaking; Patent CN110361278A from the Wuhan Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, arranges high-pressure water jet channels within the disc-shaped roller cutter body to form a hydraulic cutting roller cutter, thus achieving combined mechanical-hydraulic rock breaking; Patent CN111879647A from East China Jiaotong University, an online cutting test rig, installs high-pressure water jet nozzles under the roller cutter mounting frame to achieve hydraulic coupling rock breaking of the TBM roller cutter; Patent CN113063618A from the State Key Laboratory of Shield Tunneling and Excavation Technology allows for both vertical and horizontal rock breaking. A microwave-assisted rock-breaking system is added to the interphase switching rotary cutter rock-breaking test bench, thereby realizing microwave-assisted TBM rotary cutter rock breaking; China Railway Engineering Equipment Group Co., Ltd.'s invention patent CN110887956A has a laser and a rotary cutter cutting table on the upper part of the rock moving table, thus realizing laser-assisted TBM rotary cutter rock breaking; Henan University's utility model patent CN217819846U adds a robotic arm-type laser system and microwave system to the TBM rotary cutter rock-breaking test bench, which can realize laser-assisted rotary cutter rock breaking, microwave-assisted rotary cutter rock breaking, and laser-microwave combined-assisted rotary cutter rock breaking.

[0003] Currently, most test benches used for exploring new composite rock breaking methods at home and abroad can only simulate two or fewer rock breaking methods, with extremely poor scalability. Furthermore, in terms of high-frequency excitation composite rock breaking with roller cutters, most use servo valves to control hydraulic cylinders or air hammers to achieve roller cutter excitation, with an excitation frequency not exceeding 60Hz, making it impossible to achieve high-frequency excitation. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes a disc-shaped roller cutter composite rock-breaking test bench and test method.

[0005] The present invention provides a disc-type roller cutter composite rock breaking test bench, characterized in that it includes: a gantry frame, a locking module, a static pressure module, a cutter spacing adjustment module, two replaceable cutter boxes, a worktable, and two feed modules;

[0006] The gantry frame is mainly composed of a left support leg, a fixed crossbeam, a right support leg, and a base. The left and right support legs are symmetrically fixed on both sides of the base, and the two ends of the fixed crossbeam are fixed to the tops of the left and right support legs.

[0007] The static pressure module is fixed in the center of the fixed crossbeam of the gantry frame. The static pressure module includes a movable crossbeam, with its two ends connected to the left and right support legs of the gantry frame via guide rails, allowing it to move vertically. The cutter spacing adjustment module is fixed on the movable crossbeam, and two replaceable cutter boxes are fixedly connected to the cutter spacing adjustment module. Each replaceable cutter box contains a hobbing cutter. The cutter spacing adjustment module is used to adjust the position of the two replaceable cutter boxes. The static pressure module pushes the movable crossbeam, carrying the cutter spacing adjustment module and the replaceable cutter boxes downwards. A locking module is installed between the fixed crossbeam of the gantry frame and the movable crossbeam of the static pressure module, used to fix the position of the movable crossbeam when needed. A feed module is fixed on the base of the gantry frame, and a worktable for mounting rocks is fixed on the feed module. The feed module allows the worktable to move directly below the replaceable cutter boxes.

[0008] Furthermore, the locking module includes a locking hydraulic cylinder, a locking hydraulic cylinder seat, a first locking pin, a proximity switch, and a locking connection seat. The locking hydraulic cylinder seat includes a base plate with a left side baffle, a middle baffle, and a right side baffle from left to right, each baffle having a hole in its center. The locking hydraulic cylinder is fixed below the fixed crossbeam via the locking hydraulic cylinder seat. The piston rod end of the locking hydraulic cylinder passes through the hole in the left side baffle of the locking hydraulic cylinder seat and is connected to one end of the first locking pin via a pin. When the locking module is working, the other end of the first locking pin engages with the locking hydraulic cylinder. The plunger, pushed by the plunger, passes sequentially through the middle baffle, locking connecting seat, and right baffle of the locking hydraulic cylinder seat, thereby locking the crossbeam and the locking connecting seat. The proximity switch is fixedly connected to the locking hydraulic cylinder seat and is used to monitor the position of the first locking pin. The locking connecting seat is fixed on the movable crossbeam, and the upper part of the locking connecting seat is located between the middle baffle and the right baffle of the locking hydraulic cylinder seat. The upper part of the locking connecting seat has a hole. When the locking module fixes the position of the movable crossbeam, the hole of the locking connecting seat, the hole of the middle baffle of the locking hydraulic cylinder seat, and the hole of the right baffle are concentric.

[0009] Furthermore, the hydrostatic module also includes a main hydraulic cylinder, the cylinder body of which is fixed to the fixed crossbeam, and the piston rod end of the main hydraulic cylinder is fixed to the movable crossbeam; the main hydraulic cylinder is used to push the movable crossbeam to move in the vertical direction.

[0010] Furthermore, the tool spacing adjustment module includes an adjustment plate, a first fixed plate, and a second fixed plate; the adjustment plate is fixedly connected to the movable crossbeam, and the first fixed plate and the second fixed plate are slidably connected to the adjustment plate; the first fixed plate can move left and right along the horizontal direction, and the second fixed plate can move back and forth along the horizontal direction; the first fixed plate and the second fixed plate are respectively fixedly connected to two replaceable tool boxes.

[0011] Furthermore, the replaceable tool box includes a triaxial force sensor, a tool box, a vibration hydraulic cylinder, a striking element, a striking pad, a hob, and a hob shaft end pressure plate. One end of the triaxial force sensor is fixed to a fixing plate of the tool spacing adjustment module, and the other end is connected to the top of the tool box. The triaxial force sensor is used to measure the vertical force, tangential force, and lateral force on the hob. The vibration hydraulic cylinder is fixed in the upper part of the tool box and is used to apply high-frequency vibration force to the striking element. The striking element is installed in the middle of the tool box and can move in the vertical direction. When the piston rod of the vibration hydraulic cylinder pushes the striking element to the lowest position, the striking element contacts the striking pad. The striking pad is located on the upper part of the hob shaft and is used to transmit the vibration force generated by the vibration hydraulic cylinder to the hob. The hob is fixed to the lower part of the tool box by the hob shaft end pressure plate, and the hob shaft end pressure plate is connected to the tool box by bolts.

[0012] Furthermore, the replaceable toolbox is characterized by including a hydraulic motor and a rotary valve. The rotary valve is fixedly connected to the flange of the hydraulic motor, and the output shaft of the hydraulic motor is connected to the valve core of the rotary valve. When the output shaft of the hydraulic motor rotates, it will drive the valve core of the rotary valve to rotate. The hydraulically controlled rotary valve formed by the combination of the hydraulic motor and the rotary valve controls the excitation hydraulic cylinder to apply a high-frequency excitation force to the striking part.

[0013] Furthermore, the feature is that the surface of the cutter box has threaded holes, which can be used to fix other rock-breaking equipment to the cutter box 504 by means of bolt connection.

[0014] Furthermore, the workbench is characterized by comprising a motor, a reducer, a pinion, a slewing bearing, a hydraulic rotary joint, hydraulic lines, a rock placement platform, n arc-shaped stops, n confining pressure application cylinders, and n pressure plates, wherein n is 1-8; the motor and the reducer are connected by a key, the output shaft of the reducer is fitted with a pinion, and a gear pair is formed between the slewing bearing and the pinion; the axis of the slewing bearing is vertical, the rock placement platform is fixed on the slewing bearing, and the axis of the rock placement platform is coaxial with the axis of the slewing bearing; the arc-shaped stops and the confining pressure application cylinders are both fixed on the rock placement platform, and the piston rod end of the confining pressure application cylinder is fixedly connected to the pressure plate; the rock is placed in the cylindrical space formed by the rock placement platform, the arc-shaped stops, and the pressure plate, and confining pressure is applied to the rock through the confining pressure application cylinders and the pressure plate; the hydraulic lines supplying oil to the confining pressure application cylinders pass through the rock placement platform and are connected to the hydraulic rotary joint, which enables the hydraulic lines to rotate synchronously with the rock placement platform.

[0015] Furthermore, the feed module includes a horizontal hydraulic cylinder, a horizontal hydraulic cylinder mounting lug, a connecting flange, a locking hydraulic cylinder connecting seat, a track locking hydraulic cylinder, and a second locking pin. The horizontal hydraulic cylinder mounting seat is fixed on the base of the gantry frame, and the horizontal hydraulic cylinder and the horizontal hydraulic cylinder mounting seat are connected by a pin. The piston rod end of the horizontal hydraulic cylinder is equipped with a lug, and the lug is connected to the connecting flange by a pin. The connecting flange is fixedly connected to the worktable. The track locking hydraulic cylinder is fixed on the base of the gantry frame through the locking hydraulic cylinder connecting seat. Its piston rod end passes through the locking hydraulic cylinder connecting seat and is connected to the second locking pin by a pin. The track locking hydraulic cylinder is used to push the second locking pin to connect with the worktable, thereby locking the worktable on the base of the gantry frame.

[0016] This invention also provides a method for a combined rock-breaking test using a disc-type roller cutter, characterized by comprising the following steps:

[0017] 1) Place the rock on the worktable. The replaceable toolbox contains a hob. Push the worktable directly under the replaceable toolbox using the feed module and lock the worktable onto the base.

[0018] 2) The workbench applies confining pressure to the rock until the confining pressure on the rock reaches the required value;

[0019] 3) Adjust the position of the two replaceable tool boxes using the tool spacing adjustment module so that the tool spacing of the hobs in the two replaceable tool boxes reaches the specified value;

[0020] 4) The static pressure module pushes the movable crossbeam, along with the cutter spacing adjustment module and the replaceable cutter box, downwards; during the constant penetration depth rolling rock breaking test, once the cutter penetration depth reaches the specified value, the static pressure module is locked to ensure that the cutter penetration depth into the rock remains constant; during the constant force rolling rock breaking test, once the vertical force on the cutter reaches the specified value, the static pressure module is controlled to ensure that the vertical force on the cutter remains constant during the rock breaking process.

[0021] 5) The worktable drives the rock to start rotating, realizing the rolling and crushing of the rock by the roller cutter;

[0022] 6) After completing one round of rock breaking by the roller cutter, adjust the cutter spacing adjustment module again to move the replaceable cutter box a certain distance to achieve multiple rock breaking operations;

[0023] 7) When the test bench stops working, use the locking module to fix the lower part of the static pressure module, the tool spacing adjustment module and the replaceable tool box to the fixed crossbeam of the gantry frame.

[0024] Furthermore, when the test bench performs combined rock breaking with roller rolling and vibration, in step 4), once the vertical force on the roller reaches the specified value, the static pressure module is controlled to ensure that the force on the roller remains constant during the rock breaking process.

[0025] After completing step 4), control the excitation hydraulic cylinder to perform high-frequency excitation, and adjust the excitation force, excitation frequency and excitation speed. After the excitation parameters are adjusted, the excitation force output by the excitation hydraulic cylinder is transmitted to the hob, thereby realizing the high-frequency excitation of the hob.

[0026] Furthermore, the feature is that when the test bench performs other rock-breaking methods to assist in the combined rock-breaking of the cutter and roller, in step 4), once the vertical force on the cutter reaches the specified value, the static pressure module is controlled to ensure that the force on the cutter remains unchanged during the rock-breaking process.

[0027] After completing step 4), turn on other rock-breaking devices to achieve combined rock breaking with roller crushing assisted by other rock-breaking methods.

[0028] Compared with the prior art, the present invention has the following advantages:

[0029] This invention utilizes a replaceable cutter box and mounts necessary auxiliary rock-breaking equipment on it, enabling various rock-breaking technologies to be used in conjunction with disc cutter rolling for rock breaking, significantly improving the scalability of the test bench. This invention uses a hydraulically controlled rotary valve to control the excitation hydraulic cylinder, achieving high-frequency excitation of the cutter, with a maximum excitation frequency of 300Hz, and effectively controlling the excitation force and frequency, overcoming the problem that existing test benches cannot achieve high-frequency excitation. This invention forms a cutter protection module by installing impact pads between the cutter shaft and the impact component, reducing the impact of high-frequency impacts on the cutter and effectively preventing damage to the cutter shaft caused by high-frequency impacts from the excitation hydraulic cylinder. Simultaneously, this invention uses a locking module to lock the movable and fixed crossbeams during long-term shutdowns, solving the problem of the movable crossbeam and replaceable cutter box potentially falling due to their weight during shutdown, thus effectively improving the safety of the test bench. This invention also installs a hydraulic rotary joint below the slewing bearing, allowing the hydraulic lines of the confining pressure application cylinder to rotate synchronously with the rock box, effectively avoiding the problem of hydraulic lines entanglement during rock box rotation. Furthermore, this invention incorporates a cutter spacing adjustment module installed below the movable crossbeam and above the replaceable cutter box, allowing for adjustment of the cutter spacing between the two roller cutters, significantly enhancing the functionality and flexibility of the test bench. In summary, this invention greatly improves the scalability, high-frequency vibration capability, safety, and flexibility of the disc-type roller cutter composite rock-breaking test bench, providing substantial assistance for the research of novel composite rock-breaking technologies. Attached Figure Description

[0030] Figure 1 is an overall view of the disc-shaped roller cutter composite rock breaking test bench according to an embodiment of the present invention;

[0031] Figure 2 is a structural schematic diagram of the gantry frame and static pressure module according to an embodiment of the present invention;

[0032] Figure 3 is a structural schematic diagram of the locking module and the feeding module according to an embodiment of the present invention;

[0033] Figure 4 is a schematic diagram of the tool spacing adjustment module according to an embodiment of the present invention;

[0034] Figure 5 is a schematic diagram of a replaceable toolbox with an excitation module according to an embodiment of the present invention.

[0035] Figure 6 is a schematic diagram of a hydraulically controlled rotary valve controlling an excitation hydraulic cylinder in one embodiment of the present invention;

[0036] Figure 7 is a schematic diagram of a replaceable knife box with a water jet module in one embodiment of the present invention.

[0037] Figure 8 is a schematic diagram of the structure of the workbench according to an embodiment of the present invention.

[0038] Explanation of reference numerals in the attached drawings: 1. Gantry frame; 2. Locking module; 3. Static pressure module; 4. Tool spacing adjustment module; 5. Replaceable tool box; 6. Worktable; 7. Feed module; 101. Left support leg; 102. Fixed crossbeam; 103. Right support leg; 104. Base; 201. Locking hydraulic cylinder; 202. Locking hydraulic cylinder seat mounting plate; 203. Locking hydraulic cylinder seat; 204. First locking pin; 205. Proximity switch mounting plate; 206. Proximity switch; 207. Locking 301. Connecting seat; 302. Movable crossbeam; 303. Main hydraulic cylinder; 304. Main hydraulic cylinder connecting plate; 305. Fixed guide rail; 306. Movable guide rail; 407. Adjusting plate; 408. First pressure plate; 409. First fixed plate; 401. First lead screw adjusting seat; 401. First lead screw; 402. Second pressure plate; 403. Second fixed plate; 404. Second lead screw adjusting seat; 405. Second lead screw; 506. Sensor fixing plate; 507. Triaxial force sensor; 508. 504. Sensor connection plate; 505. Tool box; 506. Vibration hydraulic cylinder; 507. Vibration hydraulic cylinder bracket; 508. Impacting component; 509. Impacting pad; 510. Hob cutter; 511. Hob cutter shaft end pressure plate; 512. Threaded hole; 513. Water jet nozzle connecting seat; 514. Water jet nozzle; 515. Rotary valve; 516. Hydraulic motor; 607. Connecting seat; 608. Reducer; 609. Motor; 6000. Pinion gear; 601. Slewing bearing; 602. Rock placement. 607. Platform; 608. Gear cover; 609. Hydraulic rotary joint; 610. Arc stop block; 611. Confining pressure applying cylinder; 612. Confining pressure applying cylinder bracket; 613. Pressure plate; 701. Rock; 702. Horizontal hydraulic cylinder mounting base; 703. Pin; 704. Stringer; 705. Connecting flange; 706. Rail locking hydraulic cylinder connecting seat; 707. Rail locking hydraulic cylinder; 708. Rail locking hydraulic cylinder seat; 709. Second locking pin. Detailed Implementation

[0039] The present invention will be further described and illustrated below with reference to specific embodiments. The embodiments described are merely examples of the content of this disclosure and do not limit the scope of the invention. The technical features of each embodiment in the present invention can be combined accordingly, provided that there is no mutual conflict.

[0040] The disc-type roller cutter composite rock-breaking test bench proposed in this invention addresses the problem of poor expandability of existing test benches by using a replaceable cutter box. The required auxiliary rock-breaking equipment is installed on the replaceable cutter box, realizing the use of multiple rock-breaking technologies to assist disc-type roller cutter in rock breaking. To address the limitation of existing test benches in achieving high-frequency vibration of the hobbing cutter, a hydraulically controlled rotary valve is employed to control the vibration hydraulic cylinder, enabling high-frequency vibration of the hobbing cutter up to 300Hz, with effective control over both the vibration force and frequency. To address the issue of hobbing cutter shaft damage caused by high-frequency impacts from the vibration hydraulic cylinder, impact pads are installed between the hobbing cutter shaft and the impact components, forming a hobbing cutter protection module to reduce the impact of high-frequency impacts. To address the risk of the movable crossbeam and replaceable cutter box falling during prolonged shutdowns due to their weight, a locking module is used to lock the movable and fixed crossbeams during shutdown, effectively improving the safety of the test bench. To address the issue of hydraulic lines entanglement during rock box rotation, a hydraulic rotary joint is installed below the slewing bearing, connecting the hydraulic lines of the confining pressure application cylinder to the hydraulic rotary joint, allowing the hydraulic lines to rotate synchronously with the rock box, effectively preventing entanglement. Furthermore, a cutter spacing adjustment module is installed below the movable crossbeam and above the replaceable cutter box, allowing adjustment of the distance between the two cutter boxes, and consequently, the cutter spacing between the two hobbing cutters, significantly enhancing the functionality and flexibility of the test bench.

[0041] The overall diagram of the designed disc-type roller cutter composite rock-breaking test bench is shown in Figure 1. It mainly consists of seven parts: gantry frame 1, locking module 2, static pressure module 3, cutter spacing adjustment module 4, replaceable cutter box 5, worktable 6, and feed module 7. The locking hydraulic cylinder seat mounting plate 202 is bolted to the fixed crossbeam 102, fixing the locking module 2 to the gantry frame 1. The locking connecting seat 207 is bolted to the movable crossbeam 301. The main hydraulic cylinder 302 is bolted to the fixed crossbeam 102, fixing the static pressure module 3 to the gantry frame 1. The horizontal hydraulic cylinder mounting seat 701 is bolted to the base 104, fixing the feed module 7 to the gantry frame 1. The adjustment plate 401 is bolted to the movable crossbeam 301, fixing the cutter spacing adjustment module 4 and the static pressure module 3 together. The first fixing plate 403 and the second fixing plate 407 are respectively connected to a sensor fixing plate 501 by bolts, fixing the replaceable tool box 5 to the tool spacing adjustment module 4. The connecting flange 705 is connected to the connecting seat 601 by bolts, fixing the worktable 6 to the feed module 7. The replaceable tool box 5 includes a first replaceable tool box and a second replaceable tool box, and the second replaceable tool box has the same structure as the first replaceable tool box.

[0042] As shown in Figure 2, in the gantry frame, the left support leg 101 and the right support leg 103 are connected to the fixed crossbeam 102 by bolts. The left support leg 101 and the right support leg 103 are also connected to the base 104 by bolts.

[0043] As shown in Figure 3, in the locking module, the locking hydraulic cylinder seat 203 and the locking hydraulic cylinder seat mounting plate 202 are connected by bolts. The locking hydraulic cylinder seat 203 includes a base plate and three baffles, which are, from left to right, a left baffle, a middle baffle, and a right baffle, and each baffle has a hole in its center. The locking hydraulic cylinder 201 is connected to the left baffle of the locking hydraulic cylinder seat 203 by bolts. The piston rod end of the locking hydraulic cylinder 201 passes through the hole in the left baffle of the locking hydraulic cylinder seat 203 and is connected to one end of the first locking pin 204 by a pin. The other end of the first locking pin 204 can pass through the middle baffle, the locking connecting seat 207, and the right baffle of the locking hydraulic cylinder seat 203 in sequence under the push of the piston rod of the locking hydraulic cylinder 201, thereby realizing the locking and fixing of the crossbeam and the locking connecting seat. The proximity switch mounting plate 205 is fixedly connected to the locking hydraulic cylinder seat 203 and is used to monitor the position of the first locking pin. The locking connector 207 is fixed to the movable crossbeam 301 by bolts. The upper part of the locking connector 207 is located between the middle baffle and the right baffle of the locking hydraulic cylinder seat 203. The upper part of the locking connector has a hole. When the test bench stops working and the main hydraulic cylinder drives the movable crossbeam back to the highest position, the locking module fixes the position of the movable crossbeam. The hole of the locking connector, the hole of the middle baffle of the locking hydraulic cylinder seat and the hole of the right baffle are concentric.

[0044] As shown in Figure 2, in the hydrostatic module, the movable crossbeam 301 and the main hydraulic cylinder 302 are fixed together by the main hydraulic cylinder connecting plate 303. There are four sets of fixed guide rails 304, which are bolted to the left support leg 101 and the right support leg 103. There are also four sets of movable guide rails 305, which are bolted to the movable crossbeam 301. A sliding pair is formed between the movable guide rails 305 and the fixed guide rails 304, allowing the movable crossbeam 301 to slide along the fixed guide rails 304 under the push of the main hydraulic cylinder 302.

[0045] As shown in Figure 4, in the tool spacing adjustment module, there are two first pressure plates 402, which are bolted to the adjustment plate 401, forming a guide rail. A first lead screw 405 cooperates with a first lead screw adjustment seat 404 to form a helical pair. One end of the first lead screw 405 is fixed to a first fixed plate 403, and under the drive of the first lead screw 405, the first fixed plate 403 can move along the guide rail formed between the first pressure plate 402 and the adjustment plate 401. Two second pressure plates 406 are bolted to the adjustment plate 401, forming a guide rail. A second lead screw 409 cooperates with a second lead screw adjustment seat 408 to form a helical pair. One end of the second lead screw 409 is fixed to a second fixed plate 407, and under the drive of the second lead screw 409, the second fixed plate 407 can move along the guide rail formed between the second pressure plate 406 and the adjustment plate 401.

[0046] As shown in FIGS. 5 and 6, in the replaceable tool box, the three-force sensor 502 is fixedly connected between the sensor fixing plate 501 and the sensor connecting plate 503 by bolts, and is used to measure the vertical force, tangential force and lateral force received by the hob. The tool box 504 is connected to the sensor connecting plate 503 by bolts. There is a groove on each of the left and right sides of the upper part of the tool box 504. The excitation hydraulic cylinder support 506 is an inverted "U" - shaped part. The two ends of the excitation hydraulic cylinder support 506 are placed in the two grooves of the tool box 504 and are fixedly connected by bolts. The other part of the excitation hydraulic cylinder support 506 is located inside the tool box 504 and is used to fix the excitation hydraulic cylinder. The excitation hydraulic cylinder 505 is connected to the excitation hydraulic cylinder support 506 by bolts. The knocking piece 507 is similar to a "π" - shaped part and consists of a top plate and two legs. The two legs of the knocking piece 507 are located in the mounting holes in the middle of the tool box 504. The mounting holes play a role in limiting the legs, and the knocking piece 507 can move up and down along the mounting holes. The upper part of the top plate of the knocking piece 507 can contact the piston rod of the excitation hydraulic cylinder 505, and the lower part can contact the knocking cushion block 508. The knocking cushion block 508 is located on the upper part of the tool shaft of the hob 509. When the hydraulic control valve formed by the combination of the hydraulic motor 515 and the rotary valve 514 controls the excitation hydraulic cylinder 505 to apply a high - frequency excitation force to the knocking piece 507, this excitation force will be transmitted to the hob 509 through the knocking cushion block 508. Since the knocking piece 507 does not directly contact the tool shaft of the hob 509, the damage of the tool shaft can be avoided. The hob shaft end pressing plate 510 is connected to the tool box 504 by bolts, and the hob 509 is fixed inside the tool box. Thanks to the bolt connection, the hob shaft end pressing plate 510 can be disassembled arbitrarily, which is convenient for replacing the hob 509. There are threaded holes 511 on the surface of the tool box 504, and other rock - breaking equipment can be fixed on the tool box 504 in the form of bolt connection. As shown in FIG. 7, taking the water jet - assisted hob rolling rock breaking as an example, the water jet nozzle 513 can be fixedly connected to the threaded hole 511 of the tool box 504 through the water jet nozzle connecting seat 512.

[0047] As shown in Figure 4, in the workbench, the motor 603 and the reducer 602 are connected by a key. The reducer 602 and the connecting seat 601 are connected by bolts. A pinion 604 is mounted on the output shaft end of the reducer 602. The slewing bearing 605 is connected to the connecting seat 601 by bolts, and a gear pair is formed between the slewing bearing 605 and the pinion 604. A gear cover 607 is fixed to the outside of the pinion 604 and the slewing bearing 605 to prevent debris from entering the gear pair and damaging the pinion 604 and the slewing bearing 605. The rock placement platform 606 is fixed to the slewing bearing 605 by bolts. There are six arc-shaped stops 609, which are fixed to the rock placement platform 606 by bolts. The confining pressure application cylinder bracket 611 is fixed to the rock placement platform 606 by bolts, and six confining pressure application cylinders 610 are mounted on it. A pressure plate 612 is fixed to the piston rod end of the confining pressure application cylinder 610. Rock 613 is placed in a cylindrical space formed by rock placement platform 606, arc-shaped stop 609, and pressure plate 612. Containing pressure can be applied to the rock by confining pressure application cylinder 610 and pressure plate 612. The hydraulic line supplying oil to confining pressure application cylinder 610 passes through rock placement platform 606 and is connected to hydraulic rotary joint 608.

[0048] As shown in Figure 3, in the feeding module, the horizontal hydraulic cylinder 703 is connected to the horizontal hydraulic cylinder mounting base 701 via a pin 702. An earring 704 is installed at the end of the piston rod of the horizontal hydraulic cylinder 703. The earring 704 is connected to the connecting flange 705 via a pin. The track locking hydraulic cylinder connecting base 706 is fixed to the base 104 by bolts. The track locking hydraulic cylinder seat 708 is bolted to the track locking hydraulic cylinder connecting base 706. The track locking hydraulic cylinder 707 is bolted to the locking hydraulic cylinder connecting base 706, and its piston rod end passes through the track locking hydraulic cylinder connecting base 706 and is connected to the second locking pin 709 via a pin.

[0049] When the test bench performs conventional roller crushing of rock, the worktable 6 is first pushed directly below the replaceable cutter box 5 by the horizontal hydraulic cylinder 703. Then, the track locking hydraulic cylinder 707 pushes the second locking pin 709 into the hole of the connecting seat 601, firmly locking the worktable 6 onto the base 104 to prevent it from moving during the roller crushing process. Subsequently, confining pressure is applied to the rock 613 by controlling the pressure of the confining pressure application cylinder 610. Once the confining pressure on the rock 613 reaches the required value, the screw pairs consisting of the first lead screw 405 and the first lead screw adjusting seat 404, and the second lead screw 409 and the second fixing plate 407, respectively adjust the first fixing plate 403 and its connected replaceable cutter box to the required position, thereby ensuring that the blade spacing of the rollers in the two cutter boxes reaches the specified value. Scales are engraved on the first pressure plate 402 and the second pressure plate 406 to help the operator adjust the blade spacing more conveniently and accurately. After the cutter spacing is adjusted, the main hydraulic cylinder 302 pushes the movable crossbeam 301, carrying the cutter spacing adjustment module 4 and the replaceable cutter box 5 downwards. During the constant penetration rock-breaking test, once the penetration of the cutter 509 reaches the specified value, the main hydraulic cylinder 302 is locked to ensure that the cutter's penetration depth into the rock remains constant. During the constant force rock-breaking test, once the vertical force on the cutter 509 reaches the specified value, the hydraulic system of the main hydraulic cylinder 302 is controlled to ensure that the force on the cutter remains constant during rock breaking. Then, the motor 603, reducer 602, pinion 604, and slewing bearing 605 drive the rock placement platform 606 and the rock 613 to begin rotating, thus achieving rock-breaking by the cutter. Because the hydraulic rotary joint 608 supplies oil to the confining pressure cylinder 610, the problem of the hydraulic lines of the confining pressure cylinder 610 potentially getting tangled when the rock rotation angle is too large is effectively avoided, greatly improving the flexibility of the test bench. After completing one round of rock-breaking with a roller cutter, the cutter spacing adjustment module 4 can be adjusted again to move the replaceable cutter box 5 a certain distance, thereby enabling the roller cutter 509 to perform multiple cuts on the rock 613. Based on the design of the replaceable cutter box 5, the test bench can perform various roller cutter rock-breaking experiments, covering various roller cutter types and different roller cutter parameters, including but not limited to roller cutter rock-breaking experiments with different sizes and different roller cutter inclination angles.

[0050] When the test bench performs combined rock breaking using roller cutting and vibration, the worktable 6 is first pushed directly below the replaceable cutter box 5 by the horizontal hydraulic cylinder 703. Then, the track locking hydraulic cylinder 707 pushes the second locking pin 709 into the hole of the connecting seat 601, firmly locking the worktable 6 onto the base 104 to prevent it from moving during the roller cutting process. Subsequently, confining pressure is applied to the rock 613 by controlling the pressure of the confining pressure application cylinder 610. Once the confining pressure on the rock 613 reaches the required value, the screw pairs consisting of the first lead screw 405 and the first lead screw adjusting seat 404, and the second lead screw 409 and the second fixing plate 407, respectively adjust the first fixing plate 403 and its connected replaceable cutter box to the required position, thereby ensuring that the distance between the roller cutters in the two cutter boxes reaches the specified value. After the cutter spacing is adjusted, the main hydraulic cylinder 302 pushes the movable crossbeam 301, carrying the cutter spacing adjustment module 4 and the replaceable cutter box 5 downwards. When the vertical force on the cutter 509 reaches the specified value, the hydraulic system of the main hydraulic cylinder 302 can be controlled to ensure that the vertical force on the cutter remains constant during rock breaking. Next, the hydraulic motor 515 and the rotary valve 514 form a hydraulically controlled rotary valve to control the excitation hydraulic cylinder 505 to perform high-frequency excitation. The excitation frequency can reach more than 300Hz, and the excitation force, excitation frequency, and excitation speed can be infinitely adjusted. After the excitation parameters are adjusted, the excitation force output by the excitation hydraulic cylinder 505 is transmitted to the cutter 509 through the striking element 507 and the striking pad 508, thereby realizing the high-frequency excitation of the cutter 509. At the same time, the rock placement platform 606 and the rock 613 are driven to rotate by the motor 603, the reducer 602, the pinion 604, and the slewing bearing 605, thereby realizing the combined rock breaking of the cutter by rolling and excitation. After completing one cycle of roller cutting and vibration combined rock breaking, the cutter spacing adjustment module 4 can be adjusted again to move the replaceable cutter box 5 a certain distance, thereby enabling the roller cutter 509 to perform multiple cutting operations on the rock 613. Based on the design of the replaceable cutter box 5, the test bench can perform various roller cutting and vibration combined rock breaking experiments.

[0051] When the test bench performs combined rock breaking with roller crushing using other rock breaking methods, taking water jet-assisted roller crushing as an example, firstly, the worktable 6 is pushed directly below the replaceable cutter box 5 by the horizontal hydraulic cylinder 703, and the second locking pin 709 is pushed into the hole of the connecting seat 601 by the track locking hydraulic cylinder 707, thus locking the worktable 6 tightly onto the base 104 and preventing the worktable 6 from moving during the roller crushing process. Subsequently, confining pressure is applied to the rock 613 by controlling the pressure of the confining pressure applying cylinder 610. When the confining pressure of the rock 613 reaches the required value, the first fixed plate 403 and its connected replaceable cutter box and the second fixed plate 407 and their connected replaceable cutter box are adjusted to the required positions by the screw pair composed of the first lead screw 405 and the first lead screw adjusting seat 404, and the screw pair composed of the second lead screw 409 and the second fixed plate 407, respectively, thereby ensuring that the blade spacing of the rollers in the two cutter boxes reaches the specified value. After the cutter spacing is adjusted, the main hydraulic cylinder 302 pushes the movable crossbeam 301, carrying the cutter spacing adjustment module 4 and the replaceable cutter box 5 downwards. When the cutter penetration depth reaches a specified value or the vertical force reaches a specified value, the water jet is activated. Simultaneously, the motor 603, reducer 602, pinion 604, and slewing bearing 605 drive the rock placement platform 606 and the rock 613 to rotate, thereby achieving water jet-assisted cutter rolling and composite rock breaking. After one water jet-assisted cutter rolling and composite rock breaking operation is completed, the cutter spacing adjustment module 4 can be adjusted again to move the replaceable cutter box 5 a certain distance, thereby enabling the cutter 509 to perform multiple cutting operations on the rock 613. Based on the design of the replaceable cutter box 5, the test bench can conduct rock breaking experiments assisted by different types of rock breaking methods, including but not limited to water jet-assisted rock breaking experiments, laser-assisted rock breaking experiments, microwave-assisted rock breaking experiments, CO2-assisted rock breaking experiments, liquid nitrogen-assisted rock breaking experiments, and rock breaking experiments assisted by multiple rock breaking methods.

[0052] When the test bench stops working, the locking hydraulic cylinder 201 pushes the first locking pin 204 into the mounting holes of the locking hydraulic cylinder seat 203 and the locking connecting seat 207, thereby fixing the lower part of the hydrostatic module 3, the tool spacing adjustment module 4 and the replaceable tool box 5 to the fixed crossbeam 102 of the gantry frame 1, preventing them from falling off due to gravity and improving the safety and reliability of the test bench.

[0053] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. Those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A disc-shaped roller cutter composite rock-breaking test bench, characterized in that, include: The system comprises a gantry frame, a locking module, a static pressure module, a tool spacing adjustment module, two replaceable tool boxes, a worktable, and two feed modules. The gantry frame mainly consists of a left support leg, a fixed crossbeam, a right support leg, and a base. The left and right support legs are symmetrically fixed to both sides of the base, and the two ends of the fixed crossbeam are fixed to the tops of the left and right support legs. The static pressure module is fixed in the center of the fixed crossbeam of the gantry frame. The static pressure module includes a movable crossbeam, with its two ends connected to the left and right support legs of the gantry frame via guide rails, allowing it to move vertically. The tool spacing adjustment module is fixed to the movable crossbeam, and the two replaceable tool boxes are fixedly connected to it. Each replaceable tool box contains a hobbing cutter. The tool spacing adjustment module is used to adjust the position of the two replaceable tool boxes. The static pressure module pushes the movable crossbeam, carrying the tool spacing adjustment module and the replaceable tool boxes downwards. The locking module is installed between the fixed crossbeam and the movable crossbeam of the gantry frame to fix the position of the movable crossbeam when needed. A feed module is fixed to the base of the gantry frame, and a worktable for mounting rocks is fixed to the feed module. The feed module can move the worktable to directly below the replaceable toolbox. The replaceable toolbox includes a triaxial force sensor, a toolbox, a vibration hydraulic cylinder, a striking component, a striking pad, a hob, and a hob shaft end pressure plate. One end of the triaxial force sensor is fixed to a fixing plate of the tool spacing adjustment module, and the other end is connected to the top of the toolbox. The triaxial force sensor is used to measure the vertical force on the hob. Tangential and lateral forces; the excitation hydraulic cylinder is fixed in the upper part of the tool box and is used to apply high-frequency excitation force to the striking component; the striking component is installed in the middle of the tool box and can move in the vertical direction. When the piston rod of the excitation hydraulic cylinder pushes the striking component to the lowest position, the striking component contacts the striking pad; the striking pad is located on the upper part of the hob's cutter shaft and is used to transmit the excitation force generated by the excitation hydraulic cylinder to the hob; the hob is fixed in the lower part of the tool box by the hob shaft end pressure plate, and the hob shaft end pressure plate is connected to the tool box by bolts.

2. The disc-shaped roller cutter composite rock-breaking test bench according to claim 1, characterized in that, The locking module includes a locking hydraulic cylinder, a locking hydraulic cylinder seat, a first locking pin, a proximity switch, and a locking connection seat. The locking hydraulic cylinder seat includes a base plate with a left side baffle, a middle baffle, and a right side baffle from left to right, each with a hole in the center. The locking hydraulic cylinder is fixed to the bottom of the fixed crossbeam via the locking hydraulic cylinder seat. The piston rod end of the locking hydraulic cylinder passes through the hole in the left side baffle of the locking hydraulic cylinder seat and is connected to one end of the first locking pin via a pin. When the locking module is working, the other end of the first locking pin is engaged with the piston rod of the locking hydraulic cylinder. The device, when pushed, will sequentially pass through the middle baffle, locking connecting seat, and right baffle of the locking hydraulic cylinder seat, thereby locking the fixed crossbeam and the locking connecting seat; the proximity switch is fixedly connected to the locking hydraulic cylinder seat to monitor the position of the first locking pin; the locking connecting seat is fixed on the movable crossbeam, and the upper part of the locking connecting seat is located between the middle baffle and the right baffle of the locking hydraulic cylinder seat. The upper part of the locking connecting seat has a hole, and when the locking module fixes the position of the movable crossbeam, the hole of the locking connecting seat, the hole of the middle baffle of the locking hydraulic cylinder seat, and the hole of the right baffle are concentric.

3. The disc-shaped roller cutter composite rock-breaking test bench according to claim 1, characterized in that, The hydrostatic module also includes a main hydraulic cylinder, the cylinder body of which is fixed to the fixed crossbeam, and the piston rod end of which is fixed to the movable crossbeam; the main hydraulic cylinder is used to push the movable crossbeam to move in the vertical direction.

4. The disc-shaped roller cutter composite rock-breaking test bench according to claim 1, characterized in that, The tool spacing adjustment module includes an adjustment plate, a first fixed plate, and a second fixed plate. The adjustment plate is fixedly connected to the movable crossbeam. The first fixed plate and the second fixed plate are slidably connected to the adjustment plate. The first fixed plate can move left and right along the horizontal direction, and the second fixed plate can move back and forth along the horizontal direction. The first fixed plate and the second fixed plate are respectively fixedly connected to two replaceable tool boxes.

5. The disc-shaped roller cutter composite rock-breaking test bench according to claim 1, characterized in that, The replaceable toolbox also includes a hydraulic motor and a rotary valve. The rotary valve is fixedly connected to the flange of the hydraulic motor, and the output shaft of the hydraulic motor is connected to the valve core of the rotary valve. When the output shaft of the hydraulic motor rotates, it will drive the valve core of the rotary valve to rotate. The hydraulic control rotary valve formed by the combination of the hydraulic motor and the rotary valve controls the excitation hydraulic cylinder to apply a high-frequency excitation force to the striking part.

6. The disc-shaped roller cutter composite rock-breaking test bench according to claim 1, characterized in that, The workbench includes a motor, a reducer, a pinion, a slewing bearing, a hydraulic rotary joint, hydraulic lines, a rock placement platform, n arc-shaped stops, n confining pressure application cylinders, and n pressure plates, where n is 1-8. The motor and reducer are connected by a key, and a pinion is mounted on the output shaft of the reducer. A gear pair is formed between the slewing bearing and the pinion. The axis of the slewing bearing is vertical, and the rock placement platform is fixed on the slewing bearing. The axis of the rock placement platform is coaxial with the axis of the slewing bearing. The arc-shaped stops and confining pressure application cylinders are both fixed on the rock placement platform, and the piston rod end of the confining pressure application cylinder is fixedly connected to the pressure plate. The rock is placed in the cylindrical space formed by the rock placement platform, the arc-shaped stops, and the pressure plate. Confining pressure is applied to the rock through the confining pressure application cylinders and the pressure plate. The hydraulic lines supplying oil to the confining pressure application cylinders pass through the rock placement platform and are connected to the hydraulic rotary joint. The hydraulic rotary joint allows the hydraulic lines to rotate synchronously with the rock placement platform.

7. The disc-shaped roller cutter composite rock-breaking test bench according to claim 1, characterized in that, The feed module includes a horizontal hydraulic cylinder, a horizontal hydraulic cylinder mounting base, an clevis, a connecting flange, a locking hydraulic cylinder connecting base, a track locking hydraulic cylinder, and a second locking pin. The horizontal hydraulic cylinder mounting base is fixed to the base of the gantry frame. The horizontal hydraulic cylinder and the horizontal hydraulic cylinder mounting base are connected by a pin. The piston rod end of the horizontal hydraulic cylinder is equipped with an clevis, which is connected to the connecting flange by a pin. The connecting flange is fixedly connected to the worktable. The track locking hydraulic cylinder is fixed to the base of the gantry frame through the locking hydraulic cylinder connecting base. Its piston rod end passes through the locking hydraulic cylinder connecting base and is connected to the second locking pin by a pin. The track locking hydraulic cylinder is used to push the second locking pin to connect with the worktable, thereby locking the worktable to the base of the gantry frame.

8. A test method based on the disc-shaped roller cutter composite rock-breaking test bench according to claim 1, characterized in that, Includes the following steps: 1) Place the rock on the worktable. The replaceable cutter box contains roller cutters. Push the worktable directly below the replaceable cutter box using the feed module and lock the worktable onto the base. 2) Apply confining pressure to the rock on the worktable until the confining pressure reaches the required value. 3) Adjust the position of the two replaceable cutter boxes using the cutter spacing adjustment module to achieve the specified cutter spacing between the roller cutters in the two replaceable cutter boxes. 4) The static pressure module pushes the movable crossbeam, carrying the cutter spacing adjustment module and the replaceable cutter boxes downwards. During the constant penetration rock breaking test using roller cutters, once the roller cutter penetration reaches the specified value, lock the static pressure module. The static pressure module ensures that the depth of the cutter penetration into the rock remains constant. During the constant force rolling rock breaking experiment, once the vertical force on the cutter reaches the specified value, the static pressure module is controlled to ensure that the vertical force on the cutter remains constant during the rock breaking process. 5) The worktable drives the rock to start rotating, realizing the rolling rock breaking by the cutter. 6) After completing one round of rolling rock breaking, the cutter spacing adjustment module is adjusted again to move the replaceable cutter box a certain distance to realize multiple cutting rock breaking. 7) When the test bench stops working, the locking module is used to fix the lower part of the static pressure module, the cutter spacing adjustment module and the replaceable cutter box to the fixed crossbeam of the gantry frame.

9. The test method according to claim 8, characterized in that, When the test bench performs combined rock breaking with roller pressing and vibration, in step 4), once the vertical force on the roller reaches a specified value, the static pressure module is controlled to ensure that the force on the roller remains constant during the rock breaking process. After completing step 4), the vibration hydraulic cylinder is controlled to perform high-frequency vibration, adjusting the vibration force, vibration frequency, and vibration speed. Once the vibration parameters are adjusted, the vibration force output by the vibration hydraulic cylinder is transmitted to the roller, thereby achieving high-frequency vibration of the roller. When the test bench performs combined rock breaking with roller pressing assisted by other rock breaking methods, in step 4), once the vertical force on the roller reaches a specified value, the static pressure module is controlled to ensure that the force on the roller remains constant during the rock breaking process. After completing step 4), other rock breaking devices are activated, thereby achieving combined rock breaking with roller pressing assisted by other rock breaking methods.

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