CN113759096A - Multi-degree-of-freedom experimental platform for researching laser rock breaking technology - Google Patents
Multi-degree-of-freedom experimental platform for researching laser rock breaking technology Download PDFInfo
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- CN113759096A CN113759096A CN202111016074.0A CN202111016074A CN113759096A CN 113759096 A CN113759096 A CN 113759096A CN 202111016074 A CN202111016074 A CN 202111016074A CN 113759096 A CN113759096 A CN 113759096A
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Abstract
The invention discloses a multi-degree-of-freedom experiment platform for researching a laser rock breaking technology, which relates to the technical field of laser rock breaking and comprises an optical experiment platform, an experiment cavity and a laser generating device, wherein the experiment cavity is arranged on the optical experiment platform, and the laser generating device is arranged in the experiment cavity; the optical experiment platform comprises an installation platform, a sliding platform and an experiment table, wherein supporting legs are fixed at four corners of the bottom of the installation platform, the sliding platform is arranged below the installation platform in a sliding mode, the sliding direction of the sliding platform is parallel to the installation platform, the experiment table is connected with the sliding platform through three groups of multi-angle adjusting mechanisms, the three groups of multi-angle adjusting mechanisms are evenly distributed on the circumference, and through holes for the experiment table to pass through are formed in the installation platform. The relative position relation between the rectangular rock sample and the optical fiber collimation focusing head can be adjusted at multiple angles by the optical experiment platform, so that the optical fiber collimation focusing head is convenient to install and correct, and the damage of the optical experiment platform caused by the installation deviation of the optical fiber collimation focusing head is avoided.
Description
Technical Field
The invention relates to the technical field of laser rock breaking, in particular to a multi-degree-of-freedom experimental platform for researching a laser rock breaking technology.
Background
The oil and gas resources stored underground are quite rich, however, with the long-time exploitation, the development of underground mineral resources gradually moves to deepening, and the traditional drilling technology is difficult to effectively solve the drilling problem of deep complex formations in the face of the characteristics of high ground stress, high hardness of rocks, complex formations and the like of deep formations. The laser rock breaking technology also shows good application prospects in deep resource exploitation due to the advantages of low cost, high efficiency, high reliability and the like, and becomes a hotspot of research in recent years. In addition, laser is as the broken rock sharp weapon of a high energy density, different parameters are all different to the failure mechanism of different rock samples such as power, power density, the broken rock experiment of current laser is all gone on the laboratory bench, because laser has higher energy, for avoiding laser beat to lead to the fact equipment or personnel's damage partially, laser proofreading need be carried out before the broken rock of laser, and current laboratory bench only has the function of simple centre gripping rock sample, can not adjust the relative position of rock sample and laser, lead to the installation difficulty of the broken rock equipment of laser, laser easily acts on the damage that causes the laboratory bench on the laboratory bench simultaneously.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a multi-degree-of-freedom experimental platform for researching a laser rock breaking technology.
The purpose of the invention is realized by the following technical scheme: a multi-degree-of-freedom experiment platform for researching a laser rock breaking technology comprises an optical experiment platform, an experiment cavity and a laser generating device, wherein the experiment cavity is arranged on the optical experiment platform, and the laser generating device is arranged in the experiment cavity;
the optical experiment platform comprises an installation platform, a sliding platform and an experiment table, wherein support legs are fixed at four corners of the bottom of the installation platform, the sliding platform is arranged below the installation platform in a sliding mode, the sliding direction of the sliding platform is parallel to the installation platform, the experiment table is connected with the sliding platform through three groups of multi-angle adjusting mechanisms, the three groups of multi-angle adjusting mechanisms are uniformly distributed in the circumferential direction, and through holes for the experiment table to pass through are formed in the installation platform;
the multi-angle adjusting mechanism comprises two groups of parallel lifting mechanisms arranged side by side, each lifting mechanism comprises a first base, a second base, a lead screw, a slide seat, a connecting rod and a polished rod, the lead screw is arranged between the first base and the second base, one end of the lead screw is rotatably connected with the first base, the other end of the lead screw is rotatably connected with the second base, the polished rods are arranged on two sides of the lead screw, the polished rods are arranged in parallel with the lead screw, one end of each polished rod is fixedly connected with the first base, the other end of each polished rod is fixedly connected with the second base, the slide seats are in threaded connection with the lead screw, the slide seats are slidably sleeved on the polished rods, spheres are fixed at two ends of each connecting rod, ball seats are fixed on the slide seats, one ends of the connecting rods are hinged with the ball seats, and the other ends of the connecting rods are hinged with the experimental billiard types, a motor is arranged on the sliding platform, and an output shaft of the motor is in transmission connection with one end of the screw rod;
the bottom of the experiment cavity is provided with an installation opening, the top of the experiment cavity is made of transparent materials, two groups of T-shaped slide rails are fixed on the installation platform in parallel, the two groups of T-shaped slide rails are symmetrically distributed on two sides of the through hole, two groups of T-shaped slide grooves matched with the T-shaped slide rails are formed in the bottom of the experiment cavity, and the sliding direction of the experiment cavity is perpendicular to the sliding direction of the sliding platform;
the middle part of the inner cavity of the experimental cavity is fixed with a laser seat, the center of the bottom of the laser seat is provided with a circular groove, and positioning light is arranged in the circular groove.
Furthermore, the laser generating device comprises a fiber laser and a fiber collimation focusing head connected with the fiber laser, the fiber laser is used for emitting lasers with different powers, and a base of the fiber collimation focusing head is fixed on the laser base through a screw.
Further, a clamping mechanism is arranged on the mounting platform and used for clamping the rectangular rock sample on the experiment table.
Furthermore, the clamping mechanism comprises two groups of limiting clamping mechanisms and two groups of clamping mechanisms, the two groups of limiting clamping mechanisms and the two groups of clamping mechanisms respectively clamp four sides of the rectangular rock sample, each limiting clamping mechanism comprises a first air cylinder and a first pressing plate, a base of the first air cylinder is fixedly arranged on the optical experiment platform, the first pressing plates are spherically hinged on telescopic shafts of the first air cylinders, the first pressing plates are attached to the side walls of the rectangular rock sample, each clamping mechanism comprises a second air cylinder and a second pressing plate, the base of the second air cylinder is fixedly arranged on the optical experiment platform, the second pressing plates are spherically hinged on the telescopic shafts of the second air cylinders, and the second pressing plates are attached to the side walls of the rectangular rock sample.
Further, the lateral wall of the optical fiber collimation focusing head is provided with a distance sensor, and the distance sensor is used for detecting a rock breaking distance between the rectangular rock sample and the optical fiber collimation focusing head.
Furthermore, a gas tank is arranged on one side of the optical experiment platform, a gas outlet of the gas tank is connected with a gas blowing pipe, and one end, far away from the gas tank, of the gas blowing pipe is arranged on the side wall of the optical fiber collimation focusing head.
Furthermore, the inner cavity of the experiment cavity is in a cuboid shape, the imaging camera, the infrared thermometer and the two groups of infrared imagers are respectively arranged on four inner side walls of the experiment cavity, and the side walls of the experiment cavity are also provided with power test probes.
Further, a transmission screw rod and a limiting polished rod are arranged below the mounting platform in parallel, the transmission screw rod is perpendicular to the T-shaped slide rail, the transmission screw rod is connected with the support legs in a rotating mode, the limiting polished rod is fixedly connected with the support legs, the sliding platform is in threaded connection with the transmission screw rod, the sliding platform is in sliding connection with the limiting polished rod, a driving motor is arranged on the support legs, and an output shaft of the driving motor is in transmission connection with one end of the transmission screw rod.
Further, the laser generating device further comprises a laser water cooling machine, and the laser water cooling machine is connected with the optical fiber laser and used for cooling the optical fiber laser.
The invention has the beneficial effects that:
1. the utility model provides a research multi freedom experiment platform of broken rock technique of laser, the removal through slide bracket drives the laboratory bench and removes, the experiment cavity can remove on optics experiment platform and be used for driving laser generator and remove, thereby be convenient for adjust the relative position relation between laser generator and the laboratory bench, make laser generator act on the rectangle rock sample on the laboratory bench, the slide synchronous slip on the three angle adjustment mechanism of group, thereby drive the laboratory bench and reciprocate, a spacing for adjusting between rectangle rock sample and the laser generator, the slide differential slip on the three angle adjustment mechanism of group, thereby make the laboratory bench produce the deflection, and then make the rectangle rock sample on the laboratory bench carry out the broken rock experiment of laser with the angle of slope, the research of the broken rock mechanism to different out of focus volume and rock sample radius of rotation is realized.
2. Carry out the school to the effect position of optic fibre collimation focus head through location light, open location light, adjust the relative position relation between location light and the laboratory bench, the illumination position that makes location light is used in the laboratory bench, the record experiment cavity is at the mounted position on optics experiment platform, then will experiment the cavity and pull down the installation that carries out laser generating device again, will experiment the cavity at the position of record again at last and carry out the laser experiment, thereby can avoid laser to beat the circumstances that the inclined to one side caused optics experiment platform to damage.
Drawings
FIG. 1 is a schematic view of an overall structure of a multi-degree-of-freedom experimental platform for studying a laser rock breaking technology according to the present invention;
FIG. 2 is a perspective view of a multi-angle adjusting mechanism in a multi-degree-of-freedom experimental platform for studying a laser rock breaking technology;
FIG. 3 is an enlarged view of FIG. 1 at A;
FIG. 4 is a top view of an optical experiment platform in a multiple degree of freedom experiment platform for studying a laser rock breaking technique according to the present invention;
FIG. 5 is a left side view of an optical experimental platform in a multiple degree of freedom experimental platform for studying a laser rock breaking technique according to the present invention;
FIG. 6 is a schematic diagram showing the distribution of detection equipment in an experimental cavity in a multi-degree-of-freedom experimental platform for studying a laser rock breaking technology;
in the figure, 1-optical experiment platform, 2-experiment cavity, 3-installation platform, 4-sliding platform, 5-experiment table, 6-support foot, 7-through hole, 8-lifting mechanism, 9-first base, 10-second base, 11-screw rod, 12-sliding base, 13-connecting rod, 14-polished rod, 15-ball base, 16-ball, 17-T sliding rail, 18-T sliding chute, 19-laser base, 20-circular chute, 21-positioning light, 22-fiber laser, 23-fiber alignment focusing head, 24-limit clamping mechanism, 25-clamping mechanism, 26-first cylinder, 27-first pressure plate, 28-motor, 29-second cylinder, 30-second pressure plate, 31-a distance sensor, 32-a gas tank, 33-a gas blowing pipe, 34-an imaging camera, 35-an infrared thermometer, 36-an infrared imager, 37-a power test probe, 38-a transmission screw rod, 39-a limiting polished rod, 40-a laser water cooler and 41-a driving motor.
Detailed Description
The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following.
As shown in fig. 1 to 6, the multi-degree-of-freedom experimental platform for studying the laser rock breaking technology comprises an optical experimental platform 1, an experimental cavity 2 and a laser generating device, wherein the experimental cavity 2 is arranged on the optical experimental platform 1, and the laser generating device is arranged in the experimental cavity 2; by changing the output frequency, the pulse width and the output power of the laser generating device, the rock breaking process and mechanism of the laser under the action of different repetition frequencies, different pulse widths and different powers are researched, and data support is provided for rock breaking of the laser; the optical experiment platform 1 comprises an installation platform 3, a sliding platform 4 and an experiment table 5, wherein support legs 6 are fixed at four corners of the bottom of the installation platform 3, the sliding platform 4 is arranged below the installation platform 3 in a sliding mode, the sliding direction of the sliding platform 4 is parallel to the installation platform 4, the experiment table 5 is connected with the sliding platform 4 through three groups of multi-angle adjusting mechanisms, the three groups of multi-angle adjusting mechanisms are uniformly distributed in the circumferential direction, through holes 7 for the experiment table 5 to pass through are formed in the installation platform 3, the experiment table 5 is lifted and deflected through the multi-angle adjusting mechanisms, before an experiment cavity 2 is installed, the experiment table 5 is moved to the position below the installation platform 3 through the multi-angle adjusting mechanisms, so that the experiment cavity 2 is prevented from interfering with the experiment table 5, and after the experiment cavity 2 is installed, the experiment table 5 is lifted into the experiment cavity 2 to perform a laser rock breaking experiment; referring to fig. 2, the multi-angle adjusting mechanism comprises two sets of parallel lifting mechanisms 8 arranged side by side, each lifting mechanism 8 comprises a first base 9, a second base 10, a screw rod 11, a sliding base 12, a connecting rod 13 and a polished rod 14, the first base 9 and the second base 10 are both fixed on the sliding platform 4 through bolts, the screw rod 11 is arranged between the first base 9 and the second base 10, one end of the screw rod 11 is rotatably connected with the first base 9, the other end of the screw rod 11 is rotatably connected with the second base 10, the polished rods 14 are arranged on both sides of the screw rod 11, the polished rods 14 are arranged in parallel with the screw rod 11, one end of each polished rod 14 is fixedly connected with the first base 9, the other end of each polished rod is fixedly connected with the second base 10, the sliding base 12 is in threaded connection with the screw rod 11, the sliding base 12 is sleeved on the polished rods 14, both ends of the connecting rod 13 are both fixed with balls 16, the sliding base 12 is fixed with a ball seat 15, one end of the connecting rod 13 is hinged with the ball seat 15, the other end is in spherical hinge joint with the experiment table 5, a motor 28 is arranged on the sliding platform 3, and an output shaft of the motor 28 is in transmission connection with one end of the screw rod 11; the motor 28 drives the screw rod 11 to rotate, the rotation freedom degree of the sliding seat 12 is limited through the polished rod 14, so that the sliding seat 12 can only do linear motion along the axial direction of the screw rod 11, thereby pulling the experiment table 5 through the connecting rod 13, wherein both ends of the connecting rod 13 are hinged with the experiment table 5 and the sliding seats 12 in a spherical way, so that the experiment table 5 can deflect flexibly, specifically, the sliding seats 12 on the three groups of angle adjusting mechanisms slide synchronously (namely the sliding speeds are the same), thereby driving the experiment table 5 to move up and down for adjusting the distance between the rectangular rock sample and the laser generating device, the sliding seats 12 on the three groups of angle adjusting mechanisms slide for a certain distance in a differential manner, thereby enabling the experiment table 5 to deflect, further, the rectangular rock sample on the experiment table 5 is subjected to a laser rock breaking experiment at an inclined angle, so that the research on rock breaking mechanisms with different defocusing amounts and rock sample rotation radiuses is realized;
as shown in fig. 1 and fig. 3, the bottom of the experimental cavity 2 is provided with an installation opening, the top of the experimental cavity 2 is made of a transparent material (e.g. made of glass), two sets of T-shaped slide rails 17 are fixed in parallel on the installation platform 3, the two sets of T-shaped slide rails 17 are symmetrically distributed on two sides of the through hole 7, two sets of T-shaped slide grooves 18 adapted to the T-shaped slide rails 17 are formed in the bottom of the experimental cavity 2, the sliding direction of the experimental cavity 2 is perpendicular to the sliding direction of the sliding platform 4, the experimental cavity 2 is slid in from one end of the T-shaped slide rails 17, so that the experimental cavity 2 is rapidly slidably installed on the T-shaped slide rails 17, the position of the experimental table 5 is observed from the top of the experimental cavity 2, the experimental cavity 2 is slid to the experimental table 5, which is a rough adjustment of the experimental cavity 2, then the laser adjustment of the experimental cavity 2 and the experimental table 5 is performed, specifically, a seat 19 is fixed in the middle of the inner cavity of the experimental cavity 2, a circular groove 20 is formed in the center of the bottom of the laser seat 19, positioning light 21 is arranged in the circular groove 20, the laser generating device comprises a fiber laser 22 and a fiber collimation focusing head 23 connected with the fiber laser 22, the fiber laser 22 is used for emitting laser with different powers, a base of the fiber collimation focusing head 23 is fixed on the laser seat 19 through screws, the rock breaking position of the fiber collimation focusing head 23 is corrected through the positioning light 21, the positioning light 21 is started, the experiment cavity 2 is slid, the experiment table 5 is moved through the sliding platform 4, the relative position relation between the positioning light 21 and the experiment table 5 is adjusted, the illumination position of the positioning light 21 is enabled to act on the experiment table 5, the process is the accurate adjustment of the experiment table 5 and the experiment cavity 2, the installation position of the experiment cavity 2 on the optical experiment platform is recorded, and then the experiment cavity 2 is detached to install the laser generating device, the optical fiber collimation focusing head 23 is arranged on the laser seat 19, so that the irradiation position of the positioning light 21 is the rock breaking position of the optical fiber collimation focusing head 23, and finally the experiment cavity 2 is arranged at the recorded position for carrying out a laser experiment, so that the condition that the optical experiment platform 1 is damaged due to laser deviation can be avoided; the specific moving mode of the sliding platform 4 is as follows: the below parallel arrangement of mounting platform 3 has transmission lead screw 38 and spacing polished rod 39, transmission lead screw 38 perpendicular to T type slide rail 17, conveying lead screw 38 rotates with stabilizer blade 6 and is connected, spacing polished rod 39 and stabilizer blade 6 fixed connection, sliding platform 4 and transmission lead screw 38 threaded connection, sliding platform 4 and spacing polished rod 39 sliding connection, be provided with driving motor 41 on the stabilizer blade 6, driving motor 41's output shaft is connected with the one end transmission of transmission lead screw 38, driving motor 41 drives transmission lead screw 38 and rotates, through the rotatory degree of freedom of spacing polished rod 39 restriction sliding platform 4, make sliding platform 4 only can be linear motion along the axial direction of transmission lead screw 38, thereby drive laboratory bench 5 translation through multi-angle adjustment mechanism, realize laboratory bench 5's removal.
Further, as shown in fig. 1 and 4, a clamping mechanism is arranged on the mounting platform 3, the clamping mechanism is used for clamping a rectangular rock sample on the experiment table 5, the clamping mechanism comprises two groups of limiting clamping mechanisms 24 and two groups of clamping mechanisms 25, the two groups of limiting clamping mechanisms 24 and the two groups of clamping mechanisms 25 are used for clamping four sides of the rectangular rock sample respectively, the limiting clamping mechanism 24 comprises a first air cylinder 26 and a first pressure applying plate 27, a base of the first air cylinder 26 is fixedly arranged on the optical experiment platform 1, the first pressure applying plate 27 is spherically hinged on a telescopic shaft of the first air cylinder 26, the first pressure applying plate 27 is attached to a side wall of the rectangular rock sample, the clamping mechanism 25 comprises a second air cylinder 29 and a second pressure applying plate 30, a base of the second air cylinder 29 is fixedly arranged on the optical experiment platform 1, the second pressure applying plate 30 is spherically hinged on a telescopic shaft of the second air cylinder 29, the second pressing plate 30 is attached to the side wall of the rectangular rock sample, the first air cylinder 26 extends to drive the first pressing plate 27 to be in contact with the rock sample, the second air cylinder 29 extends to drive the second pressing plate 30 to be in contact with the rock sample, so that the four side walls of the rectangular rock sample are respectively pressed through the two first pressing plates 27 and the two second pressing plates 30 to complete clamping of the rock sample, the heights of the first pressing plates 27 and the second pressing plates 30 are both larger than that of the rock sample, and when the experiment table 5 is lifted to change the defocusing amount of the optical fiber collimation focusing head 23, the first pressing plates 27 and the second pressing plates 30 can still clamp the rock sample; when a rock sample needs to be clamped at a certain offset angle for a laser rock breaking experiment, the first pressure applying plate 27 and the second pressure applying plate 30 are moved to be close to the rock sample but not contacted with the rock sample, when the rock sample is deflected by the deflection experiment table 5, when the rock sample slides on the experiment table 5 in a transition of the deflection angle, the rock sample can be prevented from sliding down to the optical experiment platform 1 from the experiment table 5, after the angle adjustment is completed, the first pressure applying plate 27 and the second pressure applying plate 30 are close to the rock sample for clamping, as the first pressure applying plate 27 is spherically hinged on the telescopic shaft of the first air cylinder 26 and the second pressure applying plate 30 is spherically hinged on the telescopic shaft of the second air cylinder 29, the first pressure applying plate 27 and the second pressure applying plate 30 are deflected and extruded on the rock sample in the clamping process, the clamping mechanism still has a good clamping effect on the deflected rock sample.
Further, a distance sensor 31 is arranged on the side wall of the optical fiber collimation focusing head 23, and the distance sensor 31 is used for detecting a rock breaking distance between the rectangular rock sample and the optical fiber collimation focusing head 23 and measuring the defocusing amount of the optical fiber collimation focusing head 23; the inner cavity of the experiment cavity 2 is in a cuboid shape, the imaging camera 34, the infrared thermometer 35 and the two groups of infrared imagers 36 are respectively arranged on four inner side walls of the experiment cavity 2, the side walls of the experiment cavity 2 are also provided with power test probes 37, the laser rock breaking process is shot through the imaging camera 34 to obtain the rock breaking form on the surface of the rock sample, the reflected power of the rock sample is measured through the power test probes 37 to obtain the absorption energy of the rock sample, so that the energy absorption condition of the rock sample under different powers of the optical fiber collimation focusing head 23 is obtained, the experiment device can research the influence of different parameters of the laser on rock breaking, experimental data support is provided for actual rock breaking, the laser with proper parameters is conveniently selected according to the rock breaking experiment parameters of the laser in the actual rock breaking process, higher rock breaking effect is ensured, and the rock breaking process of the rock sample is detected from different angles through the infrared thermometer 35 and the two groups of infrared imagers 36 (ii) a One side of optics experiment platform 1 is provided with gas tank 32, the gas outlet of gas tank 32 is connected with gas blow pipe 33, the one end setting that gas blow pipe 33 kept away from gas tank 32 is on the lateral wall of optic fibre collimation focusing head 23, be equipped with pressure valve and flow valve on the gas tank 32, the gaseous atmospheric pressure and the gas blow volume of adjustable blowout, gas blow pipe 33 accessible ligature silk is fixed on optic fibre collimation focusing head 23, the gaseous impurity that blows out through gas blow pipe 33 will break the rock in-process away, prevent that impurity from causing the influence to the experimentation, avoid breaking rock impurity to shelter from the shooting effect that rock sample influences imaging camera 34 and infrared temperature measurement equipment's testing result simultaneously, through-hole 7 can in time discharge gas, avoid gaseous accomplishing to cause the influence to the experiment cavity environment after the broken rock of laser.
Further, the laser generating device further comprises a laser water cooler 40, and the laser water cooler 40 is connected with the fiber laser 22 and used for cooling the fiber laser 22.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A multi-degree-of-freedom experiment platform for researching a laser rock breaking technology is characterized by comprising an optical experiment platform (1), an experiment cavity (2) and a laser generating device, wherein the experiment cavity (2) is arranged on the optical experiment platform (1), and the laser generating device is arranged in the experiment cavity (2);
the optical experiment platform (1) comprises an installation platform (3), a sliding platform (4) and an experiment table (5), wherein support legs (6) are fixed at four corners of the bottom of the installation platform (3), the sliding platform (4) is arranged below the installation platform (3) in a sliding mode, the sliding direction of the sliding platform (4) is parallel to the installation platform (4), the experiment table (5) is connected with the sliding platform (4) through three groups of multi-angle adjusting mechanisms, the three groups of multi-angle adjusting mechanisms are evenly distributed in the circumferential direction, and through holes (7) for the experiment table (5) to penetrate through are formed in the installation platform (3);
the multi-angle adjusting mechanism comprises two groups of parallel lifting mechanisms (8) which are arranged side by side, each lifting mechanism (8) comprises a first base (9), a second base (10), a lead screw (11), a sliding seat (12), a connecting rod (13) and a polished rod (14), the lead screw (11) is arranged between the first base (9) and the second base (10), one end of the lead screw (11) is rotatably connected with the first base (9), the other end of the lead screw is rotatably connected with the second base (10), the polished rods (14) are arranged on two sides of the lead screw (11), the polished rods (14) and the lead screws (11) are arranged in parallel, one end of each polished rod (14) is fixedly connected with the first base (9), the other end of each polished rod is fixedly connected with the second base (10), the lead screw (12) is in threaded connection with the sliding seat (11), and the sliding seat (12) is sleeved on the polished rods (14), both ends of the connecting rod (13) are fixed with balls (16), the sliding seat (12) is fixed with a ball seat (15), one end of the connecting rod (13) is in ball-type hinge joint with the ball seat (15), the other end of the connecting rod is in ball-type hinge joint with the experiment table (5), the sliding platform (3) is provided with a motor (28), and an output shaft of the motor (28) is in transmission connection with one end of the screw rod (11);
the bottom of the experiment cavity (2) is provided with an installation opening, the top of the experiment cavity (2) is made of transparent materials, two groups of T-shaped sliding rails (17) are fixed on the installation platform (3) in parallel, the two groups of T-shaped sliding rails (17) are symmetrically distributed on two sides of the through hole (7), two groups of T-shaped sliding grooves (18) matched with the T-shaped sliding rails (17) are formed in the bottom of the experiment cavity (2), and the sliding direction of the experiment cavity (2) is perpendicular to the sliding direction of the sliding platform (4);
the middle part of the inner cavity of the experiment cavity (2) is fixed with a laser seat (19), the center of the bottom of the laser seat (19) is provided with a circular groove (20), and positioning light (21) is arranged in the circular groove (20).
2. The multi-degree-of-freedom experimental platform for studying laser rock breaking technology as claimed in claim 1, wherein the laser generating device comprises a fiber laser (22) and a fiber collimation focusing head (23) connected with the fiber laser (22), the fiber laser (22) is used for emitting laser with different powers, and a base of the fiber collimation focusing head (23) is fixed on the laser base (19) through a screw.
3. The experimental platform with multiple degrees of freedom for studying the laser rock breaking technology as claimed in claim 1, wherein a clamping mechanism is arranged on the mounting platform (3), and the clamping mechanism is used for clamping a rectangular rock sample on the experimental platform (5).
4. The experimental platform with multiple degrees of freedom for studying laser rock breaking technology according to claim 3, wherein the clamping mechanism comprises two sets of limiting clamping mechanisms (24) and two sets of clamping mechanisms (25), the two sets of limiting clamping mechanisms (24) and the two sets of clamping mechanisms (25) respectively clamp four sides of the rectangular rock sample, the limiting clamping mechanism (24) comprises a first air cylinder (26) and a first pressing plate (27), a base of the first air cylinder (26) is fixedly arranged on the optical experimental platform (1), the first pressing plate (27) is spherically hinged on a telescopic shaft of the first air cylinder (26), the first pressing plate (27) is attached to a side wall of the rectangular rock sample, the clamping mechanism (25) comprises a second air cylinder (29) and a second pressing plate (30), a base of the second air cylinder (29) is fixedly arranged on the optical experimental platform (1), the second pressing plate (30) is hinged to a telescopic shaft of the second air cylinder (29) in a spherical mode, and the second pressing plate (30) is attached to the side wall of the rectangular rock sample.
5. The multi-degree-of-freedom experimental platform for studying laser rock breaking technology as claimed in claim 2, wherein a distance sensor (31) is arranged on a side wall of the optical fiber collimation focusing head (23), and the distance sensor (31) is used for detecting a rock breaking distance between a rectangular rock sample and the optical fiber collimation focusing head (23).
6. The multi-degree-of-freedom experimental platform for researching the laser rock breaking technology as claimed in claim 5, wherein a gas tank (32) is arranged on one side of the optical experimental platform (1), a gas outlet of the gas tank (32) is connected with a gas blowing pipe (33), and one end, far away from the gas tank (32), of the gas blowing pipe (33) is arranged on the side wall of the optical fiber collimation focusing head (23).
7. The multi-degree-of-freedom experimental platform for researching the laser rock breaking technology as claimed in claim 1, wherein the inner cavity of the experimental cavity (2) is cuboid, the imaging camera (34), the infrared thermometer (35) and the two sets of infrared imagers (36) are respectively arranged on four inner side walls of the experimental cavity (2), and the side walls of the experimental cavity (2) are further provided with power testing probes (37).
8. The experimental platform with multiple degrees of freedom for studying the laser rock breaking technology as claimed in claim 1, wherein a transmission screw rod (38) and a limiting polished rod (39) are arranged below the mounting platform (3) in parallel, the transmission screw rod (38) is perpendicular to the T-shaped slide rail (17), the transmission screw rod (38) is rotatably connected with the support leg (6), the limiting polished rod (39) is fixedly connected with the support leg (6), the sliding platform (4) is in threaded connection with the transmission screw rod (38), the sliding platform (4) is in sliding connection with the limiting polished rod (39), a driving motor (41) is arranged on the support leg (6), and an output shaft of the driving motor (41) is in transmission connection with one end of the transmission screw rod (38).
9. The experimental platform with multiple degrees of freedom for studying laser rock breaking technology as claimed in claim 2, wherein the laser generator further comprises a laser water cooler (40), and the laser water cooler (40) is connected with the fiber laser (22) for cooling the fiber laser (22).
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| CN113759096B CN113759096B (en) | 2022-11-04 |
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