Rolling rock breaking testing machine for multi-working-condition shield tunneling machine

Abstract

The invention provides a multi-working-condition rolling rock breaking testing machine for a shield tunneling machine, which is used for a cutting rock breaking test and comprises a rock tray experiment box for placing a rock sample; the cutter assembly is opposite to the rock disc experiment box and comprises a supporting disc, a cantilever beam and a cutter, the cantilever beam is connected with the supporting disc, and the cutter is arranged on the cantilever beam; the rotating assembly is used for driving one of the rock disc experiment box and the cutter assembly to rotate relative to the other one; wherein a lifting assembly and an angle adjusting assembly are arranged between the supporting disc and the cantilever beam, the lifting assembly is used for driving the cantilever beam to do lifting motion relative to the supporting disc, and the angle adjusting assembly is used for driving the cantilever beam to do rotating motion relative to the supporting disc. By adopting the multi-working-condition rolling rock breaking testing machine for the shield tunneling machine, the technical problem that rock breaking testing is difficult to realize in different hob permutation and combination modes in the prior art can be solved.

Description

Technical Field

[0001] The invention relates to the field of experimental equipment and testing technology, and in particular to a multi-working condition shield machine rolling rock breaking testing machine. Background Art

[0002] Full-face tunnel boring machines, or shield machines, rely on the rotation of the cutterhead and the advancement of the cutter disc to penetrate and chip the rock to achieve excavation and rock breaking. The rock breaking process of the cutter disc is complex and is the superposition of three forms of motion: (1) The cutter disc follows the cutter disc to make an approximately linear penetration motion in the excavation direction; (2) The cutter disc is installed in the cutter disc and follows the cutter disc to make a circular motion under the drive of torque; (3) The cutter disc makes a circular motion around its own cutter axis. During the rock breaking process, the cutter disc continuously shears, tensions, and squeezes the rock to break it. The most common method to evaluate the rock breaking efficiency of the cutter disc is to use a laboratory-scale rock breaker to conduct a rock breaking test of the cutter disc chipping, and at the same time to conduct research on the rock breaking mechanism of the cutter and the interaction mechanism between the cutter and the rock.

[0003] Chinese patent CN1160678919A discloses a multi-roller rotary rolling rock breaking test bench and test method under high stress conditions, including: a base for carrying rock samples; multiple confining pressure application plates, vertically arranged on each vertical side of the base corresponding to the rock sample, which can move toward the rock sample and apply pressure to the rock sample; a rotating element, which can be raised and lowered and arranged directly above the base; a knife seat, which is horizontally fixed below the rotating element and can be driven to rotate by the rotating element; and rollers, which are symmetrically arranged at both ends of the knife seat and are used to roll and break the rock sample. However, the device has the following problems: the knife spacing and feeding timing of the rollers cannot be adjusted, and rock breaking tests under different roller arrangement and combination modes cannot be realized. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-working condition shield machine rolling rock breaking test machine to solve the technical problem that rock breaking tests under different roller cutter arrangement and combination modes are difficult to implement in the prior art.

[0005] To achieve the above-mentioned objectives, the present invention provides a multi-working condition shield machine rolling rock breaking test machine for chip breaking test, comprising: a rock bed test box for placing rock samples; a tool assembly opposite to the rock bed test box, the tool assembly comprising a support plate, a cantilever beam and a tool, the cantilever beam being connected to the support plate, and the tool being arranged on the cantilever beam; a rotating assembly arranged on at least one of the rock bed test box and the tool assembly, for driving one of the rock bed test box and the tool assembly to rotate relative to the other; wherein a lifting assembly and an angle adjustment assembly are respectively arranged between the support plate and the cantilever beam, the lifting assembly being used to drive the cantilever beam to move up and down relative to the support plate, and the angle adjustment assembly being used to drive the cantilever beam to rotate relative to the support plate.

[0006] Compared with the prior art, the present invention has the following beneficial effects:

[0007] The multi-working condition shield rolling rock breaking test machine of the present invention can control whether the cutter on the cantilever beam contacts the rock sample by adjusting the position of the cantilever beam. By changing the cutter cutting radius, cutter spacing and cutter angle, different test modes can be switched, and rock breaking tests under different roller cutter arrangement and combination modes can be carried out, and the test data is more real and effective. The position of the cantilever beam can be adjusted according to the test parameters during the test to meet the test requirements.

[0008] Preferably, the rolling rock breaking test machine also includes a connecting mechanism for connecting a rock bed test box and a support plate; the connecting mechanism includes a chassis and a frame, and the frame includes a crossbeam extending in a direction parallel to the surface of the chassis and a column extending in a direction perpendicular to the surface of the chassis; the column and the rock bed test box are respectively fixedly mounted on the side of the chassis facing the tool assembly, the column is arranged on both sides of the rock bed test box, and the support plate is arranged on the crossbeam of the frame, one end of the crossbeam is hinged to the column on one side, and the other end of the crossbeam can be overlapped on the column on the other side.

[0009] Preferably, an inner slide is provided on the side of the cantilever beam facing the rock bed experiment box, a plurality of inner slots are provided on the inner top of the inner slide, one or more tool seats are slidably connected to the inner slide, the tool is arranged on the tool seat, and the tool seat can be engaged with the inner slot.

[0010] Preferably, the rotating assembly is arranged on the tool assembly, and the rotating assembly includes a spindle motor and a hydraulic cylinder. The output end of the spindle motor is fixedly connected to an output gear, and the hydraulic cylinder is fixedly connected to a driven gear. The driven gear is meshed and transmission-connected with the output gear. An extension rod extending in a direction perpendicular to the rotating motion is provided at the center of the support plate, and the output end of the hydraulic cylinder is fixedly connected to the extension rod.

[0011] Preferably, the rotating component is arranged on the rock bed experiment box, and the rotating component includes a chassis, an annular slide rail, a rotating wheel and a rock bed motor. The annular slide rail is installed on the chassis, the rotating wheel is installed on the bottom surface of the rock bed experiment box, the rotating wheel cooperates with the annular slide rail, and the rock bed motor is connected to the rock bed experiment box.

[0012] Preferably, the lifting assembly includes a slide, a lifting drive mechanism and a connecting piece, the slide is slidably connected to the inner side of the bottom of the support plate, the lifting drive mechanism is arranged on the slide, the support plate has an assembly part, the connecting piece has an outer end connected to the cantilever beam and an inner end movably connected to the assembly part, the outer end of the connecting piece or the cantilever beam is in contact with the output end of the lifting drive mechanism.

[0013] Preferably, the lifting assembly further comprises a sleeve plate and a flange, wherein the sleeve plate is arranged on one of the cantilever beam and the slide seat, the flange is arranged on the other of the cantilever beam and the slide seat, and the sleeve plate is sleeved on the flange.

[0014] Preferably, an outer end of the connecting member or the cantilever beam is provided with an offset groove, and the output end of the lifting drive mechanism is slidably disposed in the offset groove.

[0015] Preferably, the angle adjustment assembly includes a rotary drive mechanism, a drive gear and a gear sleeve, the gear sleeve is provided with gear teeth, the rotary drive mechanism is fixedly connected to the support plate, the drive gear is arranged at the output end of the rotary drive mechanism, the gear sleeve is respectively connected to the cantilever beam and the support plate, and the drive gear is meshed and transmission connected with the gear teeth in the gear sleeve.

[0016] Preferably, the gear sleeve is connected to the cantilever beam through the connecting piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a three-dimensional schematic diagram of a multi-working condition shield machine rolling rock breaking test machine in an embodiment of the present invention;

[0019] Figure 2 It is a front view of a multi-working condition shield machine rolling rock breaking test machine in an embodiment of the present invention;

[0020] Figure 3 It is a partial side view of a multi-working condition shield machine rolling rock breaking test machine in an embodiment of the present invention;

[0021] Figure 4 is a three-dimensional schematic diagram of a cantilever beam in an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the installation of a single-roll cutter continuous rock breaking structure in an embodiment of the present invention;

[0023] Figure 6 It is a schematic diagram of the installation of the front and rear rock breaking structure of two roller cutters in an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the installation of a two-cutters equidistant rock breaking structure in an embodiment of the present invention;

[0025] Figure 8 This is a schematic diagram of the installation of a three-roller equidistant peak rock breaking structure in an embodiment of the present invention;

[0026] Fig. 9 This is a schematic diagram of the installation of a three-roll cutter non-equidistant rock breaking structure in an embodiment of the present invention;

[0027] Fig.10 This is a schematic diagram of the installation of a combined rock-breaking structure of a roller cutter and a scraper in an embodiment of the present invention;

[0028] Fig.11 It is a three-dimensional schematic diagram of a rotating assembly provided in a rock bed experiment box in an embodiment of the present invention;

[0029] Fig.12 It is a three-dimensional schematic diagram of a lifting assembly and an angle adjustment assembly in an embodiment of the present invention;

[0030] Fig.13 It is a front view of the lifting assembly and the angle adjustment assembly in the embodiment of the present invention;

[0031] Fig.14 It is a partial three-dimensional schematic diagram of a lifting assembly in an embodiment of the present invention;

[0032] Fig.15 It is a partial three-dimensional schematic diagram of the support plate in the embodiment of the present invention.

[0033] Among them, there are a rock bed experiment box 1, a rock sample 11, a force sensor 12, a support plate 21, an extension rod 211, an assembly part 212, a cantilever beam 22, an inner slide 221, an inner slot 222, a tool 23, a tool holder 24, a chassis 31, a crossbeam 32, a first column 33, a second column 34, a spindle motor 41, a hydraulic cylinder 42, an annular slide rail 43, a rotating wheel 44, a rock bed motor 45, a slide seat 51, a lifting drive mechanism 52, a connecting piece 53, a sleeve plate 54, a flange 55, an offset groove 56, a rotation drive mechanism 61, a drive gear 62, a gear sleeve 63, and a gear tooth 631. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] like Figures 1 to 3 As shown, the present embodiment discloses a multi-working condition shield machine rolling rock breaking test machine, which is used for chip breaking test, including: a rock bed test box 1, used to place a rock sample 11; a tool assembly opposite to the rock bed test box 1, the tool assembly including a support plate 21, a cantilever beam 22 and a tool 23, the cantilever beam 22 is connected to the support plate 21, and the tool 23 is arranged on the cantilever beam 22; a rotating assembly arranged on at least one of the rock bed test box 1 and the tool assembly, which is used to drive one of the rock bed test box 1 and the tool assembly to rotate relative to the other.

[0036] The rock bed test box 1 can be provided with a confining pressure loading system to simulate the rock breaking test in a high stress confining pressure environment, realize the rock breaking test under different stress fields, which is more in line with the crushing characteristics of deep rock mass, and provide experimental support for the research on the rock breaking mechanism of shield machine under high stress conditions. A force sensor 12 can be installed in the rock bed test box 1 to monitor the test data in real time and accurately.

[0037] The positions of the rock bed experiment box 1 and the support plate 21 are relatively fixed, and the rock bed experiment box 1 and the support plate 21 can be connected and supported by a connecting mechanism to further improve the integrity and stability of the test machine. In a feasible embodiment, the connecting mechanism includes a chassis 31 and a frame, and the frame includes a beam 32 extending in a direction parallel to the surface of the chassis 31 and a first column 33 and a second column 34 extending in a direction perpendicular to the surface of the chassis 31; the first column 33, the second column 34 and the rock bed experiment box 1 are respectively fixedly installed on the side of the chassis 31 facing the tool assembly, the first column 33 and the second column 34 are arranged on both sides of the rock bed experiment box 1, and the support plate 21 is arranged on the beam 32 of the frame. Among them, one end of the beam 32 is hinged to the first column 33, the beam 32 can rotate relative to the first column 33 around the hinge, and the other end of the beam 32 can be overlapped on the second column 34. When the crossbeam 32 rotates so that the other end of the crossbeam 32 is away from the second column 34, the tool assembly is away from the rock bed experiment box 1, which is convenient for putting the rock sample in or out of the rock bed experiment box 1; when the rock sample is put in or out, the crossbeam 32 can be rotated so that the other end of the crossbeam 32 is overlapped on the second column 34. In a preferred embodiment, the second column 34 and the crossbeam 32 are provided with a hidden buckle. During the test, the other end of the crossbeam 32 is overlapped on the second column 34 and locked by the hidden buckle to stably maintain the relative fixation between the second column 34 and the crossbeam 32, so as to ensure that the tool will not accidentally detach from the rock sample during the test.

[0038] like Figure 4 As shown, the cantilever beam 22 is provided with an inner slideway 221 on the side facing the rock bed experiment box 1, and a plurality of inner slots 222 are provided on the inner top of the inner slideway 221. One or more tool holders 24 are slidably connected to the inner slideway 221, and the tool 23 is arranged on the tool holder 24, and the tool holder 24 can be engaged with the inner slot 222. When in use, the tool holder 24 is slid in the inner slideway 221, so that the tool holder 24 is moved to a proper position and engaged and fixed with the inner slot 222, and the tool holder 24 can be further fixed to the inner slot 222 by bolts or the like on the side of the inner slot 222 facing away from the rock bed experiment box 1. According to actual needs, additional tool holders 24 can be added or removed from the inner slideway 221, or a variety of tools such as hobs and scrapers can be replaced on the tool holder 24, and tests under different arrangement and combination modes of tools can be carried out. The test data that can be obtained using this testing machine include: cantilever beam or rock plate speed, cutter cutting radius, cutter spacing, cutter angle, disc cutter rolling force, normal force and lateral force, as well as disc cutter penetration and travel distance.

[0039] like Figure 5 As shown, in an embodiment of continuous rock breaking with a single cutter, a single cantilever beam 22 is rotated, and a single cutter is installed on the cantilever beam 22. The cantilever beam 22 can be driven to rotate to drive the cutter to perform circular motion on the rock sample. The cutter contacts the rock sample and performs continuous rock breaking operations to obtain test data.

[0040] like Figure 6 As shown, in an embodiment of two rollers breaking rock forward and backward, two circularly symmetrical cantilever beams 22 are used to rotate, and a single roller is installed on each cantilever beam 22. The roller can be driven to rotate the cantilever beam 22 to drive the roller to perform circular motion on the rock sample. The two rollers selectively contact the rock sample and perform continuous rock breaking operations to obtain test data.

[0041] like Figure 7 As shown, in an embodiment of two rollers breaking rock at equal intervals, a single cantilever beam 22 is used to rotate, and two rollers are installed at equal intervals on the cantilever beam 22. The two rollers can be driven to perform circular motion on the rock sample by driving the rotation of the cantilever beam 22. The two rollers contact the rock sample and perform continuous rock breaking operations to obtain test data.

[0042] like Figure 8 As shown, in an embodiment of three rollers for rock breaking at equal intervals and staggered peaks, three cantilever beams 22 are rotated, a single roller is installed on each cantilever beam 22, and the distances between the installation positions of the rollers of the three cantilever beams 22 and the support plate 21 are equidistantly reduced. The three rollers can be driven to rotate to make circular motion on the rock sample, and the three rollers selectively contact the rock sample and perform continuous rock breaking operations to obtain test data.

[0043] like Fig. 9 As shown, in an embodiment of three rollers with unequal spacing for rock breaking, a single cantilever beam 22 is rotated, and three rollers are installed on the cantilever beam 22. The installation intervals between the three rollers are unequal, and the three rollers can be driven to perform circular motion on the rock sample by driving the cantilever beam 22 to rotate. The three rollers contact the rock sample and perform continuous rock breaking operations to obtain test data.

[0044] like Fig.10 As shown, in an embodiment of rock breaking using a combined roller cutter and a scraper, a single cantilever beam 22 is rotated, and a roller cutter and a scraper are mounted on the cantilever beam 22. The roller cutter and the scraper can be driven to perform circular motion on the rock sample by driving the cantilever beam 22 to rotate. The roller cutter and the scraper respectively contact the rock sample and perform continuous rock breaking operations to obtain test data.

[0045] Continue as Figures 1 to 3As shown, in some specific embodiments, the rotating assembly is arranged on the tool assembly, and the rotating assembly includes a spindle motor 41 and a hydraulic cylinder 42, the output end of the spindle motor 41 is fixedly connected with an output gear, the hydraulic cylinder 42 is fixedly connected with a driven gear, the driven gear is meshed and transmission-connected with the output gear, the center of the support plate 21 is provided with an extension rod 211 extending in a longitudinal direction perpendicular to the rotational motion, and the output end of the hydraulic cylinder 42 is fixedly connected with the extension rod 211. During operation, the spindle motor 41 is started, and the spindle motor 41 drives the hydraulic cylinder 42 to rotate through the transmission of the driven gear and the output gear, and the hydraulic cylinder 42 drives the extension rod 211 connected thereto to rotate, so that the tool assembly as a whole can rotate around the longitudinal axis of the extension rod 211 as the axis.

[0046] like Figures 1 to 3 , Fig.11 As shown, in some specific embodiments, the rotating assembly is provided on the rock bed experiment box 1, and the rotating assembly includes a chassis 31, an annular slide rail 43, a rotating wheel 44 and a rock bed motor 45. The annular slide rail 43 is installed on the chassis 31, the rotating wheel 44 is installed on the bottom surface of the rock bed experiment box 1, the rotating wheel 44 cooperates with the annular slide rail 43, and the rock bed motor 45 is installed on the rock bed experiment box 1. When working, the rock bed motor 45 is started, and the rock bed motor 45 drives the rock bed experiment box 1 to rotate on the annular slide rail 43.

[0047] The position of the rotating assembly can be set or the rotating assembly can be selected to work according to actual needs. For example, when conducting tests under different arrangement and combination modes of the tool 23, at least a rotating assembly is provided on the rock bed test box 1. During the test, the tool assembly can be kept fixed, and the rotating assembly drives the rock bed test box 1 to rotate relative to the tool assembly; when conducting a rock breaking test in a confining pressure environment, at least a rotating assembly is provided on the tool assembly. During the test, the rock bed test box 1 can be kept fixed, and the rotating assembly drives the tool assembly to rotate relative to the rock bed test box 1. In some preferred embodiments, in order to facilitate switching of test modes and meet the test requirements of more stringent or complex conditions, the rock bed test box 1 and the tool assembly can be provided with rotating assemblies at the same time.

[0048] like Figures 12 to 15 As shown, a lifting assembly and an angle adjustment assembly are respectively provided between the support plate 21 and the cantilever beam 22, so that the cantilever beam 22 is connected to the support plate 21. The lifting assembly is used to drive the cantilever beam 22 to move up and down relative to the support plate 21, and the angle adjustment assembly is used to drive the cantilever beam 22 to rotate relative to the support plate 21. When there are multiple cantilever beams 22, each cantilever beam 22 can be provided with an independent lifting assembly and an angle adjustment assembly, so as to realize independent control of the position of each cantilever beam.

[0049] The lifting assembly includes a slide 51, a lifting drive mechanism 52 and a connecting member 53. The slide 51 is slidably connected to the inner side of the bottom of the support plate 21. The sliding connection between the slide 51 and the support plate 21 can be achieved by a sliding connection method in which a slider and a slide rail cooperate. When the cantilever beam 22 moves up and down relative to the support plate 21, the position of the slide 51 relative to the support plate 21 remains fixed, and the support plate 21 provides force support for the slide 51 in the lifting direction; when the cantilever beam 22 rotates relative to the support plate 21, the slide 51 can slide relative to the inner side of the bottom of the support plate 21.

[0050] A cylinder can be selected as the lifting drive mechanism 52 and is arranged on the slide 51. The support plate 21 has a mounting portion 212. The connecting member 53 has an outer end connected to the cantilever beam 22 and an inner end movably connected to the mounting portion 212. The cantilever beam 22 contacts the output end of the lifting drive mechanism 52. When the movable connection is activated to lift or lower the cantilever beam 22 to adjust the position of the cantilever beam 22, the inner end of the connecting member 53 moves relative to the mounting portion 212 at the movable connection, so that the outer end of the connecting member 53 can move relative to the support plate 21 in the lifting direction, but will not move relative to the support plate 21 in other directions. In one feasible embodiment, the inner end of the connecting member 53 is movably connected to the assembly portion 212 in a hinged manner, and the inner end of the connecting member 53 can rotate relative to the assembly portion 212 around the hinge, so that the outer end of the connecting member 53 can move in the lifting direction relative to the support plate 21; in another feasible embodiment, the inner end of the connecting member 53 is movably connected to the assembly portion 212 in a manner that a slider and a slide rail cooperate, the slider is arranged at the inner end of the connecting member 53, and the slide rail extends on the assembly portion 212 along the lifting direction, the slider and the slide rail can slide relative to each other to form a movably connected, so that the connecting member 53 can move as a whole in the lifting direction relative to the support plate 21.

[0051] A reset spring may be provided at the movable connection of the connector 53. When the output end of the lifting drive mechanism 52 is not extended, the reset spring is in an initial state; when the output end of the lifting drive mechanism 52 extends and lifts the cantilever beam 22, the cantilever beam 22 is lifted relative to the support plate 21, and the inner end of the connector 53 moves relative to the assembly portion 212 at the movable connection, and the reset spring is deformed and enters an energy storage state; when the output end of the lifting drive mechanism 52 gradually retracts, the reset spring releases the stored energy, causing the inner end of the connector 53 to generate a reset movement at the movable connection, driving the outer end of the connector 53 and the cantilever beam 22 to descend relative to the support plate 21, and the reset spring is deformed toward its initial state. In an alternative embodiment, the cantilever beam 22 is connected to the output end of the lifting drive mechanism 52. When the output end of the lifting drive mechanism 52 extends and lifts up the cantilever beam 22, the cantilever beam 22 is lifted relative to the support plate 21; when the output end of the lifting drive mechanism 52 gradually retracts, the output end of the lifting drive mechanism 52 pulls the cantilever beam 22 to make it descend relative to the support plate 21. In another alternative embodiment, the outer end of the connecting member 53 contacts and is connected to the output end of the lifting drive mechanism 52. When the output end of the lifting drive mechanism 52 extends and lifts up the outer end of the connecting member 53, the connecting member 53 drives the cantilever beam 22 to lift relative to the support plate 21; when the output end of the lifting drive mechanism 52 gradually retracts, the output end of the lifting drive mechanism 52 pulls the outer end of the connecting member 53 to make it descend, thereby driving the cantilever beam 22 to descend relative to the support plate 21.

[0052] Specifically, the lifting assembly further includes a sleeve 54 and a flange 55, wherein the sleeve 54 is disposed on the cantilever beam 22, and the flange 55 is disposed on the slide 51, and the sleeve 54 is sleeved on the flange 55, thereby preventing the lifting assembly from being separated from the cantilever beam 22, and when the cantilever beam 22 rotates relative to the support plate 21, the cantilever beam 22 drives the lifting assembly to rotate stably together through the sleeve 54 and the flange 55. In an alternative embodiment, on the contrary, the sleeve 54 is disposed on the slide 51, and the flange 55 is disposed on the cantilever beam 22.

[0053] In some preferred embodiments, the outer end of the connecting member 53 or the cantilever beam 22 is provided with an offset groove 56, and the output end of the lifting drive mechanism 52 is slidably disposed in the offset groove 56. When in use, the output end of the lifting drive mechanism 52 can extend and lift the offset groove 56, so that the cantilever beam 22 is lifted relative to the support plate 21. By setting the length of the offset groove 56, the sliding range of the output end of the lifting drive mechanism 52 can be limited, so as to prevent the cantilever beam 22 from being excessively adjusted in the lifting direction and prevent the sleeve plate 54 from slipping off the flange 55.

[0054] Continue as Figures 12 to 15As shown, the angle adjustment assembly includes a rotation drive mechanism 61, a driving gear 62 and a gear sleeve 63. A gear sleeve 63 is provided with gear teeth 631, the motor as the rotation drive mechanism 61 is fixedly connected to the support plate 21, the driving gear 62 is arranged at the output end of the motor, the gear sleeve 63 is respectively connected to the cantilever beam 22 and the support plate 21, and the driving gear 62 is meshed and transmission-connected with the gear teeth 631 in the gear sleeve 63.

[0055] Specifically, the gear sleeve 63 can be sleeved on the extension rod 211. The gear teeth 631 rotate under the drive of the driving gear 62, and the gear teeth 631 drive the gear sleeve 63 to rotate around the longitudinal axis of the extension rod 211, thereby realizing the rotational movement of the cantilever beam relative to the support plate. When there are multiple cantilever beams, each cantilever beam is connected to an independent gear sleeve, and multiple gear sleeves can be sleeved on the extension rod 211 in sequence from top to bottom, and different gear sleeves can be independently controlled and rotated.

[0056] Specifically, the inner end of the connecting member 53 is configured to be movably connected to the gear sleeve 63, thereby forming a movable connection between the connecting member 53 and the support plate 21. The gear sleeve 63 is connected to the cantilever beam 22 through the connecting member 53. When the angle adjustment assembly drives the cantilever beam 22 to rotate relative to the support plate 21, the gear sleeve 63 can drive the connecting member 53 to rotate in the direction around the extension rod 211 without activating the movable connection, that is, the connecting member 53 is only connected and drives the cantilever beam 22 to rotate through the movable connection, but the inner end of the connecting member 53 will not move relative to the assembly portion 212 at the movable connection, thereby avoiding accidental position changes of the cantilever beam during the rotation. The lifting assembly and the angle adjustment assembly are connected to the cantilever beam 22 through the connecting member 53, and control the corresponding position adjustment of the cantilever beam 22, which facilitates the operation of adjusting the position of the cantilever beam, reduces the number of parts, and improves assembly efficiency.

[0057] When in use, the tool 23 is fixed at an appropriate position of the cantilever beam 22, and the lifting assembly is controlled to lift the cantilever beam 22 that needs to be tested until the tool 23 on the cantilever beam 22 leaves the surface of the rock sample, so as to adjust the angle of the cantilever beam 22. Then, the angle adjustment assembly is controlled to drive the cantilever beam 22 to rotate relative to the support plate 21 to adjust the angle of the cantilever beam 22. Then, the lifting assembly is controlled to lower the cantilever beam 22 that needs to be tested until the tool 23 on the cantilever beam 22 is in full contact with the surface of the rock sample; the lifting assembly is controlled to lift the cantilever beam 22 that does not need to be tested until the tool 23 on the cantilever beam 22 leaves the surface of the rock sample. Then, the rotating assembly drives one of the tool assembly and the rock plate experiment box 1 to rotate relative to the other, so that the cantilever beam 22 and the rock sample rotate relative to each other, so that the tool on the cantilever beam that needs to be tested can break the rock sample, and the tool on the cantilever beam that does not need to be tested will not contact the rock sample during the test. By adjusting the position of the cantilever beam, it is possible to control whether the cutter on the cantilever beam contacts the rock sample. By changing the cutter cutting radius, cutter spacing and cutter angle, it is possible to switch between different test methods. Rock breaking tests under different cutter arrangement and combination modes can be carried out, and the test data is more real and effective. The test parameters can be obtained through the force sensor, and the position of the cantilever beam can be adjusted according to the test parameters during the test to meet the test requirements.

[0058] The above description of various embodiments of the present invention is provided to those skilled in the art for the purpose of description. It is not intended to be exhaustive or to limit the present invention to a single disclosed embodiment. As mentioned above, various substitutions and variations of the present invention will be apparent to those skilled in the art to which the above-mentioned technology belongs. Therefore, although some alternative embodiments have been specifically discussed, other embodiments will be apparent, or those skilled in the art will be relatively easy to derive. The present invention is intended to include all substitutions, modifications and variations of the present invention discussed herein, as well as other embodiments falling within the spirit and scope of the above-mentioned application.

[0059] Although the present invention has been described through embodiments, those skilled in the art will appreciate that there are many modifications and variations of the present invention without departing from the spirit of the present invention. It is intended that the appended claims include such modifications and variations without departing from the spirit of the present invention.

Claims

1. Multi-condition shield machine rolling rock breaking test machine, used for chip breaking test, characterized by: include: Rock bed experiment box, used to place rock samples; A tool assembly opposite to the rock bed experiment box, the tool assembly comprising a support plate, a cantilever beam and a tool, the cantilever beam being connected to the support plate, and the tool being arranged on the cantilever beam; A rotating assembly provided on at least one of the bedrock experiment box and the tool assembly, and used for driving one of the bedrock experiment box and the tool assembly to rotate relative to the other; Among them, a lifting component and an angle adjustment component are respectively arranged between the support plate and the cantilever beam, the lifting component is used to drive the cantilever beam to move up and down relative to the support plate, and the angle adjustment component is used to drive the cantilever beam to rotate relative to the support plate.

2. The rolling rock breaking testing machine according to claim 1, characterized in that: It also includes a connecting mechanism for connecting the rock bed experiment box and the support plate; the connecting mechanism includes a chassis and a frame, the frame includes a crossbeam extending in a direction parallel to the surface of the chassis and a column extending in a direction perpendicular to the surface of the chassis; the column and the rock bed experiment box are respectively fixedly installed on the side of the chassis facing the tool assembly, the column is arranged on both sides of the rock bed experiment box, and the support plate is arranged on the crossbeam of the frame, one end of the crossbeam is hinged to the column on one side, and the other end of the crossbeam can be overlapped on the column on the other side.

3. The rolling rock breaking testing machine according to claim 1, characterized in that: An inner slide is provided on the side of the cantilever beam facing the rock bed experiment box, a plurality of inner slots are provided on the inner top of the inner slide, one or more tool holders are slidably connected to the inner slide, the tool is arranged on the tool holder, and the tool holder can be engaged with the inner slot.

4. The rolling rock breaking testing machine according to claim 1, characterized in that: The rotating assembly is arranged on the tool assembly, and the rotating assembly includes a spindle motor and a hydraulic cylinder. The output end of the spindle motor is fixedly connected to an output gear, and the hydraulic cylinder is fixedly connected to a driven gear. The driven gear is meshed and transmission-connected with the output gear. An extension rod extending in a direction perpendicular to the rotating motion is provided at the center of the support plate, and the output end of the hydraulic cylinder is fixedly connected to the extension rod.

5. The rolling rock breaking testing machine according to claim 1, characterized in that: The rotating component is arranged on the rock bed experiment box, and the rotating component includes a chassis, an annular slide rail, a rotating wheel and a rock bed motor. The annular slide rail is installed on the chassis, the rotating wheel is installed on the bottom surface of the rock bed experiment box, the rotating wheel cooperates with the annular slide rail, and the rock bed motor is connected to the rock bed experiment box.

6. The rolling rock breaking testing machine according to claim 1, characterized in that: The lifting assembly includes a slide, a lifting drive mechanism and a connecting piece. The slide is slidably connected to the inner side of the bottom of the support plate. The lifting drive mechanism is arranged on the slide. The support plate has an assembly portion. The connecting piece has an outer end connected to the cantilever beam and an inner end movably connected to the assembly portion. The outer end of the connecting piece or the cantilever beam is in contact with the output end of the lifting drive mechanism.

7. The rolling rock breaking testing machine according to claim 6, characterized in that: The lifting assembly further includes a sleeve plate and a flange, wherein the sleeve plate is arranged on one of the cantilever beam and the slide seat, the flange is arranged on the other of the cantilever beam and the slide seat, and the sleeve plate is sleeved on the flange.

8. The rolling rock breaking testing machine according to claim 7, characterized in that: The outer end of the connecting member or the cantilever beam is provided with an offset groove, and the output end of the lifting drive mechanism is slidably arranged in the offset groove.

9. The rolling rock breaking testing machine according to any one of claims 6 to 8, characterized in that: The angle adjustment assembly includes a rotary drive mechanism, a drive gear and a gear sleeve, wherein the gear sleeve is provided with gear teeth, the rotary drive mechanism is fixedly connected to the support plate, the drive gear is arranged at the output end of the rotary drive mechanism, the gear sleeve is respectively connected to the cantilever beam and the support plate, and the drive gear is meshed and transmission-connected with the gear teeth in the gear sleeve.

10. The rolling rock breaking testing machine according to claim 9, characterized in that: The gear sleeve is connected to the cantilever beam through the connecting piece.

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