CN110082501B - Geological core space attitude restoration device - Google Patents
Geological core space attitude restoration device Download PDFInfo
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- CN110082501B CN110082501B CN201910355119.3A CN201910355119A CN110082501B CN 110082501 B CN110082501 B CN 110082501B CN 201910355119 A CN201910355119 A CN 201910355119A CN 110082501 B CN110082501 B CN 110082501B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/14—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object using acoustic emission techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
Abstract
The invention discloses a geological core space posture recovery device which comprises a base station, a rotary table, a middle table body and a rotary chuck, wherein the rotary table is rotatably arranged on the base station, the middle table body is rotatably arranged on the rotary table, and the rotary chuck is rotatably arranged on the middle table body and used for clamping a core; the middle table body is also provided with a displacement measuring device which can move along the direction of the rotary axis of the rotary chuck and is used for measuring the distance from the rotary axis of the rotary chuck to each point on the outer surface of the core; the rotary axis of the rotary table is perpendicular to the rotary axis of the middle table body, and the rotary axis of the rotary chuck is perpendicular to the rotary axis of the middle table body. The method has the characteristics of accurate restoration of the spatial attitude of the rock core, reliable parameter testing precision and high automation degree, is suitable for the original spatial attitude restoration of the ordinary non-directional geological rock core, and is assisted to deep rock body ground stress testing and deep structural analysis.
Description
Technical Field
The invention belongs to the field of deep geological core testing equipment, and particularly relates to a geological core space attitude restoration device.
Background
With the increase of the demand of mineral resources and the continuous consumption of shallow resources, the future mineral resource development of China will enter the deep deposit in the range of the second depth space (1000- & ltSUB & gt 2000m) & gt comprehensively, and the deep mining of mines will become a normal state. Deep geological cores have become important bases for understanding various physical and mechanical properties, structures and structural characteristics, mineral composition and grade, rock stratum thickness, buried depth and the like of underground deep rock masses.
However, most cores are non-directional cores obtained by ordinary geological drilling, so that the original spatial posture of the core cannot be obtained, and the defect greatly limits the effective utilization of deep cores. For example, in the process of measuring deep crustal stress by adopting an acoustic emission method, since the spatial orientation of a common rock core cannot be obtained, the knowledge of the deep crustal stress state of a measuring region is limited; in a non-oriented state, structural surface feature analysis of a deep common core is limited to basic parameters such as structural surface type and density, and deep structural features cannot be further deeply analyzed based on a spatial orientation. In order to break through the later homing problem of the common core, partial methods are innovated in recent years, but certain limitations still exist. For example, ancient geomagnetism is used for core attitude recovery, which is limited to sedimentary rock; the acoustic-electric borehole wall imaging technology is adopted for later homing of the rock core, and the method has complex testing procedures and large actual operation difficulty; in addition, the actual accuracy of the existing non-oriented core ground orientation methods still needs to be further improved.
In order to improve the utilization value of the deep core and widen the application of the deep core in the field of ground stress testing and deep structure analysis, research and development of testing equipment for solving the technical problem of restoration of the space attitude of the common geological core are urgently needed.
Disclosure of Invention
The present application is directed to solving at least one of the problems in the prior art. Therefore, the invention aims to provide a device capable of realizing the restoration of the space attitude of the geological core.
In order to solve the technical problems, the invention adopts the following technical scheme:
the geological core space posture recovery device comprises a base station, a rotary table rotatably arranged on the base station, a middle table body rotatably arranged on the rotary table and a rotary chuck rotatably arranged on the middle table body and used for clamping a core;
the middle table body is also provided with a displacement measuring device which can move along the direction of the rotary axis of the rotary chuck and is used for measuring the distance from the rotary axis of the rotary chuck to each point on the outer surface of the core;
the rotary axis of the rotary table is perpendicular to the rotary axis of the middle table body, and the rotary axis of the rotary chuck is perpendicular to the rotary axis of the middle table body.
Furthermore, a first driving motor for driving the rotary table to rotate is arranged on the base table, a second driving motor for driving the middle table body to rotate is arranged on the rotary table, and a third driving motor for driving the rotary chuck to rotate and a linear driving mechanism for driving the displacement measuring device to move are arranged on the middle table body.
Furthermore, a shape scanner for acquiring the surface shape of the core is further arranged on the middle platform body.
Further, linear actuating mechanism includes transmission lead screw and guide bar, the slip setting that the interval set up side by side is in slider on the guide bar and the fourth driving motor of drive transmission lead screw pivoted, the slider with transmission lead screw thread fit connects, displacement measurement device and appearance scanner set up in on the slider.
Furthermore, still be equipped with the angle sensor who measures revolving chuck turned angle on the middle stage body, the base station with be equipped with first graduation staff gauge and the first pointer that is used for measuring revolving stage turned angle between the revolving platform, the revolving platform with be equipped with second graduation staff gauge and the second pointer that is used for measuring middle stage body turned angle between the middle stage body.
Furthermore, the revolving platform horizontal installation be in on the base station, be equipped with two stands on the revolving platform side by side, middle stage body erects through its pivot two between the stand, the gyration chuck set up in the middle part of middle stage body.
Furthermore, the middle table body is a cylinder with a second reference circle scale on the peripheral wall, the rotary table is provided with the second pointer, the first reference circle scale is arranged on the base table, and the first pointer is arranged on the rotary table.
Furthermore, the first driving motor, the second driving motor, the third driving motor, the linear driving mechanism, the displacement measuring device, the angle sensor and the profile scanner are all electrically connected with the control and data monitoring system of the restoration device.
Furthermore, the displacement measuring device adopts a grating displacement measuring device, and a spherical measuring head of the grating displacement measuring device is in contact with the outer surface of the rock core.
Furthermore, the central axis of the spherical measuring head and the rotation axis of the rotary chuck are positioned in the same vertical plane.
Further, the axis of revolution of the turntable, the axis of rotation of the intermediate table body, and the axis of revolution of the spin chuck intersect at the same point.
Furthermore, a sliding rail extending towards the radial direction of the rotary chuck is further arranged on the middle table body, a supporting sliding table is arranged on the sliding rail in a sliding mode, the whole linear driving mechanism is fixedly installed on the supporting sliding table and can move synchronously along with the supporting sliding table, and a locking piece for locking the position of the supporting sliding table is further arranged on the middle table body.
Compared with the prior art, the invention has the following beneficial effects:
1. the spatial attitude is accurately restored; the method comprises the following steps of clamping a rock core by using a rock core rotary chuck, driving the rotary chuck to rotate through a rotary table and an intermediate platform according to inclination measurement data (spatial azimuth data) of the rock core, and initially reducing the spatial inclination direction of the rock core; then, rotating the rock core and accurately measuring the offset of each point on the surface of the rock core relative to the axis of the chuck, then solving the average deflection angle corresponding to each offset peak point and valley point, and further making two marking lines; according to the principle of consistency of the rock core shaft and the drilling shaft and the principle of spatial uniqueness of the rock core posture, the parameters are compared with the drilling inclination measuring curve, the up-down relation of the two marking lines in the spatial position is determined, the two marking lines are further positioned in the vertical plane through chuck rotation, and accurate restoration of the spatial posture of the common rock core can be achieved.
2. The parameter testing precision is reliable; by adopting a high-precision grating displacement measuring device, a morphology scanner and an angle sensor, the axis offset of each point on the circumferential surface of the rock core can be precisely measured, and a precise digital image of the surface structure characteristic of the rock core is extracted; the precise parameter measurement can ensure the reliability of the original posture reduction of the core space and the extraction of the surface structure characteristics.
3. The device has high automation degree; the actions of position reduction, core rotation, measuring head movement and the like related to the geological core surface characteristic measurement and space attitude restoration process are automatically controlled by a servo motor, so that the influences caused by human factors, such as displacement and angle measurement errors caused by non-uniform rotation, can be effectively eliminated; and the measuring process is further simplified, and the manpower cost is saved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the linear drive mechanism of the present invention coupled to a spin chuck;
FIG. 3 is a schematic top view of the present invention;
FIG. 4 is a schematic diagram of a software interface of the control and data monitoring system according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, a geological core space posture recovery device comprises a base table 1, a rotary table 2 rotatably arranged on the base table 1, a middle table body 3 rotatably arranged on the rotary table 2, and a rotary chuck 5 rotatably arranged on the middle table body 3 and used for clamping a core 4; the middle table body 3 is also provided with a displacement measuring device 6 which can move along the direction of the rotation axis of the rotary chuck 5 and is used for measuring the distance from the rotation axis of the chuck to each point on the outer surface of the core 4; the axis of rotation of the turntable 2 is perpendicular to the axis of rotation of the intermediate table body 3, and the axis of rotation of the spin chuck 5 is perpendicular to the axis of rotation of the intermediate table body 3.
Specifically, the axis of rotation of the turntable 2, the axis of rotation of the intermediate table body 3, and the axis of rotation of the spin chuck 5 intersect at the same point.
By utilizing the geological core space attitude restoration device of the embodiment, the core space attitude restoration process is as follows: defining an intersection line positioned at the top of the core when the core is intersected with a vertical plane as a 0-degree reference line, clamping the upper end of the core 4 by using a rotary chuck 5, and driving the rotary chuck 5 to rotate through a rotary table 2 and an intermediate platform 3 according to inclination measuring data (space azimuth data) of the core 4 to initially reduce the spatial inclination direction of the core; on the basis, the axial line of the upper end surface of the rock core 4 is consistent with the axial line of the rotary chuck 5; then, the rock core 4 is rotated, the offset of each point on the surface of the rock core relative to the axis of the chuck is accurately measured, peak values and valley values of the offset of the cross section of different positions of the rock core 4 and corresponding deflection angles of the cross section are obtained, and then two marking lines are made; according to the principle of consistency of the rock core shaft and the drilling shaft and the principle of spatial uniqueness of the rock core posture, the two marking lines are compared with the drilling inclination measuring curve, the up-down relation of the two marking lines in the spatial position is determined, the two marking lines are further positioned in the vertical plane through chuck rotation, and accurate restoration of the spatial posture of the common rock core can be achieved.
Referring to fig. 1, in an embodiment, the base 1 of the recovery apparatus of this embodiment is provided with a first driving motor 7 for driving the rotary table 2 to rotate, the rotary table 2 is provided with a second driving motor 8 for driving the intermediate table body 3 to rotate, and the intermediate table body 3 is provided with a linear driving mechanism 9 for driving the displacement measuring device 6 to move and a third driving motor 10 for driving the rotary chuck 5 to rotate. In the embodiment, the actions of position reduction, core rotation, measuring head movement and the like related to the geological core space attitude restoration process are automatically controlled by the servo motor, so that the influences caused by human factors, such as displacement, angle measurement errors and the like caused by non-uniform rotation, can be effectively eliminated; and the measuring process is further simplified, and the manpower cost is saved.
For improving the measurement accuracy, the displacement measurement device 6 adopts a grating displacement measurement device, a spherical measuring head 601 of the grating displacement measurement device is in contact with the outer surface of the rock core 4, the measurement accuracy of the grating displacement measurement device can reach 0.1um, and the specific structure of the displacement measurement device is the prior art and is not repeated herein.
Referring to fig. 1, it is conceivable that when the central axis of the spherical probe 601 and the rotation axis of the rotary chuck 5 are designed to be located in the same vertical plane, a curve formed by connecting the core 4 and the vertical plane to the top end surface of the core during measurement is defined as an offset angle reference line, and through the above arrangement, when an average deflection angle corresponding to each offset peak point and valley point is calculated, the core is simply rotated reversely by the calculated average deflection angle, the parameter is compared with a borehole inclination measurement curve, and one of the deflection angles is determined to be a final deflection angle.
Referring to fig. 1, in an embodiment, a profile scanner 11 for acquiring the surface profile of the core is further disposed on the middle stage of the restoration device in this embodiment, the profile scanner 11 is driven by the linear driving mechanism 9 to move synchronously with the displacement measurement device 6, and specific structures of the profile scanner 11 are existing devices and are not described herein again.
Referring to fig. 2, it should be noted that this embodiment provides a specific structure of a linear driving mechanism 9, which includes a transmission screw 901 and a guide rod 902 that are arranged side by side at intervals, a slider 903 that is slidably arranged on the guide rod 902, and a fourth driving motor 904 that drives the transmission screw 901 to rotate, where the slider 903 is in threaded fit with the transmission screw 901, the displacement measuring device 6 and the topography scanner 11 are arranged on the slider 903, the fourth driving motor 904 is installed on the middle stage body 3, the transmission screw 901 is directly abutted to a rotating shaft of the fourth driving motor 904, the transmission screw 901 is driven to rotate by the fourth driving motor 904, the transmission screw 901 converts a spiral power into a sliding force that the slider 903 slides along the guide rod 902 in the axial direction, and the slider 903 is driven to move back and forth on the guide rod 902.
Referring to fig. 1 and 3, in an embodiment, an angle sensor 12 for measuring a rotation angle of the spin chuck 5 is further provided on the intermediate table body 3, a first graduated circle scale 13 and a first pointer 14 for measuring a rotation angle of the spin chuck 2 are provided between the base table 1 and the spin table 2, and a second graduated circle scale 15 and a second pointer 16 for measuring a rotation angle of the intermediate table body 3 are provided between the spin table 2 and the intermediate table body 3. When the core space is restored, the rotation angle of the rotary table 2 is measured by the first graduated circle scale 13 and the first pointer 14, and the rotation angle of the intermediate table body 3 is measured by the second graduated circle scale 15 and the second pointer 16.
Specifically, the revolving platform 2 is horizontally installed on the base platform 1, two upright posts 17 are symmetrically arranged on the revolving platform 2 side by side with the revolving platform rotation center, the middle platform body 3 is erected between the two upright posts 17 through the rotating shaft of the middle platform body, the second driving motor 8 is installed on one upright post 17 and is in butt joint with the rotating shaft of the middle platform body 3, and a manual spoke turntable 18 for assisting in driving the middle platform body 3 to rotate is further arranged on the outer side of the other upright post 17.
Referring to fig. 2, in practical application, the middle table body is a cylinder, the rotary chuck 5 is arranged at the central side part of the middle table body 3 through the connecting base 19, the rotary chuck 5 is provided with a plurality of groups of positive clamping jaws 501 for coaxially clamping the long rock core 4, the rotary chuck 5 is coaxially arranged at the center of the front surface of the chuck rotary table 20 on the connecting base 19, and the third driving motor 10 belt drives the rotary chuck 5 to synchronously rotate through the transmission shaft; the angle sensor 12 is disposed in the cut in the middle section of the connection base 19, and is coaxially connected to the spin chuck 5 through a connection rod, for measuring the rotation angle of the spin chuck 5.
The middle table body 3 is cylindrical, the second graduated circle scale 15 is arranged on the outer peripheral wall of the middle table body 3, the second pointer 16 is arranged on the upright post 17 and points to the second graduated circle scale 15, the first graduated circle scale 13 is arranged on the base 1 and is positioned at the periphery of the rotary table 2, and the first pointer 14 is arranged on the rotary table 2 and points to the first graduated circle scale 13.
Referring to fig. 2, in an embodiment, in the restoring apparatus of this embodiment, a slide rail 21 is further disposed on the connection base 19, an extending direction of the slide rail 21 is parallel to a radial direction of the rotating chuck 5, a support sliding table 22 is slidably disposed on the slide rail 21, the whole linear driving mechanism 9 is fixedly mounted on the support sliding table 22 and can move synchronously with the support sliding table 22, a locking structure for locking a position of the support sliding table 22 is further fixedly disposed on the connection base 19, and the locking structure may be a locking bolt 23 or a jacking cylinder or an air cylinder, etc. connected with the support sliding table and capable of driving the support sliding table to slide. The drag chain 24 is installed in parallel with the screw 901 and the guide rod 902, one end of the drag chain is connected with the sliding block 903, and the other end of the drag chain is connected with the supporting sliding table 22, and the drag chain is used for protecting the led-out data wire in the sliding process of the sliding block 903.
The first driving motor 7, the second driving motor 8, the third driving motor 10, the linear driving mechanism 9, the displacement measuring device 6, the angle sensor 12 and the morphology scanner 11 are all electrically connected with a control and data monitoring system of the restoration device, the control and data monitoring system is used for controlling the actions of all components and collecting and analyzing measurement parameters, the control and data monitoring system comprises a programmable controller 25 and an industrial personal computer 26, and the specific control and collection circuits are all designed conventionally in the electric control field and are not repeated herein.
The control and data monitoring system is electrically connected with the first driving motor 7, the second driving motor 8, the third driving motor 10 and the fourth driving motor 904 through a communication and driving interface 28 by a conductive cable 27, and is respectively used for controlling the rotary table 2, the middle table body 3 and the rotary chuck 5 to rotate and controlling the displacement measuring device 6 to slide; the control and data monitoring system is electrically connected with the displacement measuring device 6 and the profile scanner 11 (profile scanning camera) through a conductive cable 27 via a communication and driving interface 28 and a drag chain 21, and is used for collecting and analyzing characteristic parameters of the rock core; the control and data monitoring system is electrically connected with the angle sensor 12 through a conductive cable 27 via a communication and driving interface 28, and is used for acquiring the angular displacement parameters of the rotating chuck 5. And when the control and data monitoring system electrically controls the core 4 clamped by the rotary chuck 5 to rotate, synchronous data acquisition is performed on the angle sensor 12, the grating displacement measuring device 6 and the morphology scanner 11, so that the synchronous corresponding relation between the core rotation angle parameter and the core characteristic parameter is ensured.
The specific process of recovering the spatial attitude of the core by adopting the recovery device of the invention is as follows:
the first step is as follows: clamping a rock core; the upper section of the long core 4 is arranged in a rotary chuck 5, and a small section (3cm) of core is tightly held by screwing a positive clamping jaw on the rotary chuck 5, so that the axis of the core 4 of the clamped section is superposed with the axis of the rotary chuck 5;
the second step is that: adjusting the positions of the displacement measuring device 6 and the profile scanner 11; the supporting sliding table 22 is pushed to slide along the sliding rail 21 to adjust the height of the displacement measuring device 6 and the profile scanner 11 relative to the core 4, so that the measuring scale 602 of the grating displacement measuring device 6 is retracted by 2-5mm for displacement, and the spherical measuring head 601 is tightly attached to the surface of the core 4; after the adhesion is determined, the sliding locking bolt 23 is screwed down to fix the support sliding table 22;
the third step: initially reducing the spatial position of the rock core; clicking a software interface (as shown in figure 4) of an industrial personal computer of the control and data monitoring system, inputting inclination measurement data (space azimuth data) of the rock core obtained by early-stage calculation into corresponding azimuth and inclination angle (vertex angle) columns, and clicking a parameter locking and walking button; then, the core space position reduction base station works, and the first driving motor 7 drives the double-column to rotate in the horizontal direction to a corresponding azimuth angle; the second driving motor 8 drives the middle table body to rotate in the vertical direction to a corresponding inclination angle; completing initial reduction of the spatial position of the rock core;
the fourth step: measuring characteristic parameters of the rock core; clicking a software interface (as shown in fig. 4) of an industrial personal computer of the control and data monitoring system, and starting a third driving motor 10 and a fourth driving motor 904 to respectively drive the rotation angle of the rotary chuck 5 and the displacement of the measuring head to return to the zero position; then, setting the position of the measuring head relative to the upper end face of the rock core, clicking a walking button, and driving the measuring head to move to a corresponding position along the guide rod by a fourth driving motor 904; at the moment, the rotation speed of a third driving motor 10 is set, the rotary chuck 5 with the rock core 4 is driven to rotate from a zero position, and meanwhile, the angle sensor 12, the grating displacement measuring device 6 and the morphology scanner 11 synchronously acquire displacement and morphology data of the rock core surface at different deflection angles at the measuring position, and the displacement and the morphology data are synchronously displayed and stored by the control and data monitoring device; repeating the above procedures, gradually advancing the measuring head of the grating displacement measuring device 6 from the upper end to the lower end of the core, and measuring the characteristic parameters of the core at certain intervals;
the fifth step: analyzing characteristic parameters; the control and data monitoring system analyzes each group of data synchronously obtained by the angle sensor and the grating displacement measuring device to obtain a displacement peak point, a displacement valley point and deflection angles corresponding to the displacement peak point and the displacement valley point, analyzes the relationship between the deflection angles corresponding to the displacement peak point and the displacement valley point, then respectively solves the average deflection angle corresponding to each displacement peak point and displacement valley point, compares the parameters with a drilling slope measuring curve, and determines one deflection angle as a final deflection angle;
and a sixth step: accurately reducing the spatial attitude of the rock core and extracting characteristic parameters; inputting the final deflection angle obtained in the previous step into a new position column (as shown in fig. 4) of a software interface of the control and data monitoring device 3, clicking a position recovery button, driving the core 25 to rotate to the position by the chuck rotation servo motor 23, and marking a mark line, namely finishing the accurate reduction of the spatial attitude of the core; on the basis, according to the parameters of the surface structural plane of the rock core 25 obtained by the morphology scanning camera 33, the real occurrence of the surface structural plane of the rock core can be solved;
the seventh step: utilizing core parameters; according to the recovered space attitude of the rock core and the marks made on the rock core, the rock core sampling work by the acoustic emission method can be carried out; meanwhile, according to the real occurrence of the solved structural plane, the structural analysis work of the position of the rock core can be carried out.
The above examples are merely illustrative for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Nor is it intended to be exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (10)
1. Geological core space posture recovery device, its characterized in that: the rotary drill comprises a base platform, a rotary table, a middle table body and a rotary chuck, wherein the rotary table is rotatably arranged on the base platform, the middle table body is rotatably arranged on the rotary table, and the rotary chuck is rotatably arranged on the middle table body and used for clamping a core;
the middle table body is also provided with a displacement measuring device which can move along the direction of the rotary axis of the rotary chuck and is used for measuring the distance from the rotary axis of the rotary chuck to each point on the outer surface of the core;
the rotary axis of the rotary table is vertical to the rotary axis of the middle table body, and the rotary axis of the rotary chuck is vertical to the rotary axis of the middle table body;
when the space posture is accurately restored:
firstly, clamping a core by using a rotary chuck, and driving the rotary chuck to rotate through a rotary table and an intermediate platform according to inclination measurement data of the core to perform initial reduction on the spatial inclination direction of the core;
on the basis, the upper end of the core is clamped by using a rotary chuck, so that the axis of the upper end surface of the core is consistent with the axis of the rotary chuck; then, rotating the rock core and accurately measuring the offset of each point on the surface of the rock core relative to the axis of the chuck, then solving the average deflection angle corresponding to each offset peak point and valley point, and further making two marking lines;
and then, according to the consistency principle of the rock core shaft and the drilling shaft and the spatial uniqueness principle of the rock core posture, comparing the two marking lines with the drilling inclination measuring curve, determining the up-down relation of the two marking lines in the spatial position, and further enabling the two marking lines to be positioned in the vertical plane through chuck rotation, so that the accurate restoration of the spatial posture of the common rock core can be realized.
2. The rehabilitation device according to claim 1, characterized in that: the rotary table is characterized in that the base table is provided with a first drive motor for driving the rotary table to rotate, the rotary table is provided with a second drive motor for driving the middle table to rotate, the middle table is provided with a third drive motor for driving the rotary chuck to rotate and a linear drive mechanism for driving the displacement measuring device to move, and the middle table is further provided with an angle sensor for measuring the rotation angle of the rotary chuck.
3. The rehabilitation device according to claim 2, characterized in that: and the middle platform body is also provided with a shape scanner for acquiring the surface shape of the core.
4. The rehabilitation device according to claim 3, characterized in that: the first driving motor, the second driving motor, the third driving motor, the linear driving mechanism, the displacement measuring device, the angle sensor and the morphology scanner are all electrically connected with the control and data monitoring system of the restoration device.
5. The rehabilitation device according to claim 2, characterized in that: the linear driving mechanism comprises a transmission screw rod and a guide rod which are arranged side by side at intervals, a sliding block arranged on the guide rod and a fourth driving motor for driving the transmission screw rod to rotate, the sliding block is in threaded fit connection with the transmission screw rod, and the displacement measuring device and the morphology scanner are arranged on the sliding block.
6. The rehabilitation device according to claim 1, characterized in that: the rotary table is characterized in that a first graduated circle scale and a first pointer which are used for measuring the rotation angle of the rotary table are arranged between the base table and the rotary table, and a second graduated circle scale and a second pointer which are used for measuring the rotation angle of the middle table are arranged between the rotary table and the middle table.
7. The rehabilitation device according to claim 6, characterized in that: the rotary table is horizontally arranged on the base platform, two stand columns are arranged on the rotary table side by side, the middle table body is erected between the two stand columns through a rotating shaft of the middle table body, and the rotary chuck is arranged in the middle of the middle table body.
8. The rehabilitation device according to any of claims 2-7, characterized in that: the middle table body is also provided with a slide rail extending towards the radial direction of the rotary chuck, a supporting sliding table is arranged on the slide rail in a sliding manner, the whole linear driving mechanism is fixedly arranged on the supporting sliding table and can synchronously move along with the supporting sliding table, and the middle table body is also provided with a locking piece for locking the position of the supporting sliding table.
9. The rehabilitation device according to any of claims 1-7, characterized in that: the displacement measuring device adopts a grating displacement measuring device, a spherical measuring head of the grating displacement measuring device is in contact with the outer surface of the rock core, and the central axis of the spherical measuring head and the rotary axis of the rotary chuck are positioned in the same vertical plane.
10. The rehabilitation device according to any of claims 1-7, characterized in that: the rotary axis of the rotary table, the rotary axis of the intermediate table body and the rotary axis of the rotary chuck intersect at the same point.
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| CN111735875B (en) * | 2020-07-21 | 2020-11-17 | 中南大学 | Device and method for measuring radial acoustic characteristics of rock core |
| CN114378334B (en) * | 2022-01-28 | 2023-08-18 | 中建八局第二建设有限公司 | Single operable multi-angle perforating device |
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