A core drill bit integrating core sample extraction and strength testing

Abstract

The application discloses a core drill bit integrating core sample taking and strength testing, which comprises a hollow drill cylinder and a driving mechanism; the inner wall of the hollow drill cylinder is provided with first vertical strip holes; the first vertical strip holes are oppositely arranged along the axis of the hollow drill cylinder; the outer wall of the hollow drill cylinder is provided with first through holes at the first vertical strip holes; a detection device is radially and slidably connected in the first vertical strip holes; the detection device comprises a detector and a pressing component; the detector is arranged on the surface of the pressing component facing the inside of the hollow drill cylinder; the pressing component is aligned with the inside of the hollow drill cylinder; the pressing component is detachably and drivingly connected with the driving mechanism; the driving mechanism is used for driving the pressing component to move into and out of the first vertical strip holes; the inner wall of the hollow drill cylinder is further provided with second vertical strip holes; the second vertical strip holes are oppositely arranged; a crushing device is radially and slidably connected in the second vertical strip holes; the outer wall of the hollow drill cylinder is provided with second through holes at the second vertical strip holes; and the purpose of in-situ transverse splitting strength detection of the concrete core sample is achieved.

Description

Technical Field

[0001] This invention relates to the field of road inspection and construction equipment technology, and in particular to a core drilling bit that integrates core sample extraction and strength testing. Background Technology

[0002] Existing core drilling machines require the core sample to be taken back to the laboratory after drilling. The sample is then cut according to experimental requirements using a cutting machine, and a universal testing machine is used to perform a splitting tensile test to obtain the splitting strength. This strength is then used to calculate the compressive and tensile strengths of the pavement structure. Finally, combined with the road's operational status, the remaining service life and health condition of the pavement structure can be calculated. However, core samples are susceptible to damage during transportation, which is time-consuming, labor-intensive, and time-consuming. After the test, the samples are often discarded, causing construction waste pollution. Furthermore, the holes drilled from the core sample need to be filled promptly, increasing road management costs. Therefore, a core drilling device capable of in-situ core drilling and testing has emerged.

[0003] Existing technology discloses a roadbed compaction testing device, which samples the roadbed through a sampling tube and compresses the top of the sand core sample through a testing device at the top of the sampling tube to obtain sand core sample data. This allows for in-situ extraction and testing of the core sample. However, this testing device is applied to sand core samples, which primarily consider vertical pressure testing. For concrete core samples, which are often extracted from concrete pavements or walls, horizontal compressive stress must be considered for concrete pavements, and vertical compressive stress for concrete walls. Therefore, more consideration needs to be given to the transverse compressive strength of the core sample, i.e., transverse splitting strength testing. Thus, existing technology cannot meet the testing requirements for concrete core samples, and a device capable of transversely testing splitting strength is urgently needed to fill this gap.

[0004] In conclusion, it is of great significance to develop a device that can perform in-situ core drilling and transverse splitting strength testing. Summary of the Invention

[0005] The purpose of this invention is to provide a core drill bit that integrates core sample extraction and strength testing, so as to solve the problem that existing core drilling devices with strength testing cannot perform transverse splitting strength testing.

[0006] To address the aforementioned technical problems, this invention provides a core drilling bit integrating core sample extraction and strength testing, comprising a hollow drill cylinder and a drive mechanism; the inner wall of the hollow drill cylinder is provided with a plurality of first vertical slots; the plurality of first vertical slots are arranged opposite to each other along the axis of the hollow drill cylinder, and the outer wall of the hollow drill cylinder is provided with a first through hole at the first vertical slot; a detection device is radially slidably connected inside the first vertical slot; the detection device includes a detector and a pressing component; the detector is disposed on the surface of the pressing component facing the interior of the hollow drill cylinder, the pressing component is aligned with the interior of the hollow drill cylinder, the pressing component is detachably and driveably connected to the drive mechanism, and the drive mechanism is used to drive the pressing component to move into and out of the first vertical slot.

[0007] In one embodiment, the detection device is arranged vertically.

[0008] In one embodiment, a plurality of the first vertical slots are provided in the middle of the cylinder wall.

[0009] In one embodiment, the surface of the extrusion member facing the interior of the hollow drill barrel is a plane.

[0010] In one embodiment, the extrusion member has a mounting hole on the surface facing the interior of the hollow drill barrel, the detector is placed in the mounting hole, and the surface of the detector facing the interior of the hollow drill barrel is flush with the surface of the extrusion member facing the interior of the hollow drill barrel.

[0011] In one embodiment, the extrusion member has convex walls at both the top and bottom, and the first vertical strip hole has grooves at both the top and bottom. The plurality of grooves are arranged radially, and the plurality of convex walls are respectively placed in the plurality of grooves. The face of the extrusion member facing away from the interior of the hollow drill barrel has a first threaded hole, and the first threaded hole is threadedly connected to the drive mechanism.

[0012] In one embodiment, the inner wall of the hollow drill cylinder is further provided with a plurality of second vertical slots; the plurality of second vertical slots are arranged opposite to each other, and a crushing device is radially slidably connected inside the second vertical slots; the outer wall of the hollow drill cylinder is provided with a second through hole at the second vertical slot.

[0013] In one embodiment, a plurality of the second vertical perforations are arranged in a circumferential manner at 30° to 45°.

[0014] In one embodiment, the crushing device is aligned with the interior of the hollow drill barrel, and the surface of the crushing device facing away from the interior of the hollow drill barrel is provided with a second threaded hole, which is threadedly connected to the drive mechanism.

[0015] In one embodiment, the drive mechanism includes hydraulic rods, hydraulic pipes, and a hydraulic pump; one end of each of the hydraulic rods is threaded, and the threaded end of each of the hydraulic rods is threaded to a plurality of first threaded holes and a plurality of second threaded holes; the other end of each of the hydraulic rods is connected to a hydraulic pipe, and the hydraulic pipe is connected to the hydraulic pump.

[0016] The beneficial effects of this invention are as follows:

[0017] Because the detector is located on the surface of the extrusion component facing the interior of the hollow drill cylinder, the extrusion component is aligned with the interior of the hollow drill cylinder, and the extrusion component is detachably connected to the drive mechanism, which drives the extrusion component to move in and out of the first vertical strip hole, in application, after drilling the core sample, the hollow drill cylinder and the core sample can be pulled out, and the drive mechanism can be detachably connected, allowing the extrusion component inside the hollow drill cylinder to apply lateral pressure, so as to conduct the lateral splitting strength test of the core sample in situ at the core sample extraction point. This satisfies the requirement for testing the lateral splitting strength of concrete core samples, reduces the probability of core sample damage, improves core sample testing efficiency, and effectively solves the problem that existing core drilling devices with strength testing cannot perform in-situ lateral splitting strength testing. Attached Figure Description

[0018] To more clearly illustrate the technical solution of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic cross-sectional view of the hollow drill barrel provided in a preferred embodiment of the present invention. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the structure of the first vertical slot of the hollow drill cylinder provided in a preferred embodiment of the present invention;

[0021] Figure 3 This is a schematic cross-sectional view of the hollow drill barrel provided in a preferred embodiment of the present invention. Figure 2 ;

[0022] Figure 4 This is a schematic diagram of the overall structure provided by a preferred embodiment of the present invention;

[0023] Figure 5 This is a front view of the hollow drill barrel provided in a preferred embodiment of the present invention. Figure 1 ;

[0024] Figure 6This is a front view of the hollow drill barrel provided in a preferred embodiment of the present invention. Figure 2 .

[0025] The attached figures are labeled as follows:

[0026] 1. Hollow drill barrel; 10. First vertical slot; 11. First through hole; 12. Second vertical slot; 13. Second through hole; 14. Fastening device; 15. Scale;

[0027] 2. Detection device; 20. Detector; 21. Extrusion component; 210. First threaded hole;

[0028] 3. Crushing device; 30. Second threaded hole;

[0029] 4; Drive mechanism; 40; Hydraulic rod; 41; Hydraulic pipe; 42; Hydraulic pump. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0031] In the existing technology, core drilling devices with detection functions have two main drawbacks: First, existing core drilling machines with detection functions only have vertical pressure detection. However, for concrete core samples, more consideration should be given to the testing of transverse splitting strength, and the existing technology cannot meet the requirements for transverse splitting strength testing of concrete core samples. Second, after the existing core drilling machine has completed the testing, the core sample will be directly discarded, causing construction waste pollution. The holes after core extraction also need to be filled in a timely manner, increasing management costs.

[0032] To address the aforementioned problems, this invention provides a core drilling bit that integrates core sample extraction and strength testing. This core drilling bit includes a hollow drill cylinder, a detection device, a crushing device, and a drive mechanism. The detection device and the crushing device are both located on the inner wall of the hollow drill cylinder. The hollow drill cylinder is used to extract the core sample. The cooperation between the detection device and the drive mechanism is used to perform a transverse splitting strength test on the core sample. The cooperation between the crushing device and the drive mechanism is used to crush the core sample, thereby facilitating the backfilling of the core sample hole with the crushed core sample.

[0033] After adopting the above-mentioned setup, the core drilling bit can not only perform a transverse splitting strength test on the core sample after taking it out, but also ensure that the tested core sample is further crushed to facilitate the backfilling of the hole. In order to better explain this core drilling bit, the following will provide a preferred embodiment for explanation.

[0034] Specifically, such as Figures 1 to 6 As shown, this preferred embodiment includes a hollow drill barrel 1, a pair of detection devices 2, three pairs of crushing devices 3, and a drive mechanism 4.

[0035] Regarding the aforementioned hollow drill cylinder 1, as... Figure 1 , Figure 3 , Figure 5 and Figure 6 As shown, a fastening device 14 is fixedly connected to the top of the hollow drill cylinder 1, and a connecting rod is fixedly connected to the top of the fastening device 14; four triangular water inlets are provided on the upper part of the wall of the hollow drill cylinder 1, which are used to allow cooling water to flow in to protect the drill cylinder from overheating; a ring of serrated edges is provided on the bottom of the hollow drill cylinder 1, which are cutting teeth inlaid with hard alloy, enabling drilling and excavation operations under very hard ground conditions, and can extract complete and smooth road core samples; the wall of the hollow drill cylinder 1 is a solid wall, which enhances the structural stability of the hollow drill cylinder 1 and improves the torque transmission performance; the outer wall of the hollow drill cylinder 1 is provided with vertical scales 15, which can be used to control the drilling progress of concrete core samples by combining the known road surface thickness with the scales 15 on the side of the drill cylinder; the inner wall of the hollow drill cylinder 1 is provided with two first vertical slots 10 and six second vertical slots 12.

[0036] It should be noted that the reason why the first vertical slot 10 and the second vertical slot 12 are both set as slot-shaped hole structures is that setting the holes as slots can meet the space requirements of the device in the smallest space and does not damage the structure of the hollow drill cylinder 1.

[0037] For the first vertical slot 10, the two first vertical slots 10 inside the hollow drill cylinder 1 are arranged opposite each other along the axis of the hollow drill cylinder 1. Both vertical slots are located in the middle of the cylinder wall. Both first vertical slots 10 are radially slidably connected to the detection device 2. The outer wall of the hollow drill cylinder 1 is provided with a first through hole 11 at the first vertical slot 10. The first through hole 11 can be externally connected to a driving device, providing a basis for the lateral movement of the detection device 2.

[0038] The reason why both vertical perforations are located in the middle of the cylinder wall is that the middle of the cylinder wall is aligned with the middle of the core sample. Testing the middle of the core sample can reduce the influence of boundary effects. Generally speaking, the boundary is where a lot of information and performance converge. It is heterogeneous and prone to change, and special phenomena are easily generated. It cannot accurately reflect the state and mechanical properties of the core sample or the object to be tested. At the same time, the middle of the core sample corresponds to the middle of the object to be tested (such as pavement, wall surface, and column surface). The physical and mechanical properties of the core sample in the middle of the object to be tested are better than those of the edge part, which can better reflect the state and mechanical properties of the object to be tested.

[0039] It should be noted that the reason why the two first vertical strip holes 10 are arranged opposite each other along the axis of the hollow drill barrel 1 is that each of the two first vertical strip holes 10 is equipped with a detection device 2. This is to ensure that when a pair of detection devices 2 performs transverse splitting strength testing on the concrete core sample, the compressive force is applied on the same surface, so as to comply with the provisions of the current national standard "Standard for Test Methods of Mechanical Properties of Ordinary Concrete" GB / T 50081 for the splitting test of core sample blocks.

[0040] Regarding the second vertical slot 12, the six second vertical slots 12 inside the hollow drill cylinder 1 are arranged opposite each other, and the six second vertical slots 12 are arranged circumferentially along the axis of the hollow drill cylinder 1 at intervals of 30° to 45°. A crushing device 3 is radially slidably connected inside the second vertical slot 12. The outer wall of the hollow drill cylinder 1 is provided with a second through hole 13 at the second vertical slot 12. The second through hole 13 can be externally connected to a driving device, providing a basis for the radial movement of the crushing device 3.

[0041] It should be noted that the reason for the relative arrangement of the six second vertical strip holes 12 is that the second vertical strip holes 12 are equipped with crushing devices 3. The relative arrangement can ensure that the crushing devices 3 can fully crush the core sample, and then the crushed core sample can be used as aggregate, combined with premixed quick repair material to backfill and repair the holes from which the core sample was drilled.

[0042] When the hollow drill barrel 1 is in use, the fastening device 14 includes a pair of clamping plates and a mounting plate. The pair of clamping plates are arranged opposite to each other on the outer wall of the hollow drill barrel 1. Each of the clamping plates has a protruding wall at the top, and each of the two protruding walls has a first threaded hole 210. The mounting plate also has a second through hole of the corresponding size. A screw is installed between the first through hole and the second through hole. The two first threaded holes 210 are tightened by the screw to achieve clamping and fastening of the hollow drill barrel 1. A connecting rod is connected and fixed on the mounting plate. The outer wall of the connecting rod has threads to facilitate threaded connection to a motor, thereby driving the entire hollow drill barrel 1 to rotate with the motor to drill core samples. When the core sample is drilled, if those skilled in the art need to send the core sample for testing, the user can loosen the fastening device to rotate it to the side to facilitate the removal of the core sample.

[0043] Regarding the aforementioned detection device 2, such as Figure 1 , Figure 2 and Figure 4 As shown, the detection device 2 is placed inside the first vertical slot 10. The detection device 2 is arranged vertically and includes a pressing component 21 and a detector 20. The pressing component 21 is aligned with the inside of the hollow drill cylinder 1, and the detector 20 is located on the surface of the pressing component 21 facing the inside of the hollow drill cylinder 1. The pressing component 21 is detachably connected to the drive mechanism 4.

[0044] In this configuration, the extrusion component 21 is aligned with the inside of the hollow drill cylinder 1, and the detection device 2 is arranged vertically with the surface of the detection device 2 facing the inside of the hollow drill cylinder 1 flush with the inner wall surface of the hollow drill cylinder 1. With this configuration, the extrusion component 21 can be aligned with the core sample to perform radial extrusion.

[0045] It should be noted that the vertical arrangement of the detection device 2 corresponds to the hole pattern of the first vertical strip hole 10, allowing the detection device 2 to be moved radially in and out of the first vertical strip hole 10. On the other hand, the vertical arrangement can make the most of the structural pattern of the hole. If the detection device 2 is placed horizontally or obliquely, it will result in wasted space and the problem of not being able to move the detection device 2 radially in and out of the first vertical strip hole 10.

[0046] For the extrusion component 21, the surface of the extrusion component 21 facing the inside of the hollow drill cylinder 1 is a plane. When the extrusion component 21 applies radial pressure, the plane of the surface facing the inside of the hollow drill cylinder 1 can effectively avoid the problem of stress concentration and prevent the tested strength data from being lower than the actual strength data due to stress concentration. The extrusion component 21 achieves a sliding connection by cooperating with the first vertical strip hole 10.

[0047] The extrusion component 21 has convex walls at its top and bottom, while the first vertical strip hole 10 has grooves at its top and bottom. Multiple grooves are arranged radially, and multiple convex walls are placed in multiple grooves respectively. The surface of the extrusion component 21 facing away from the interior of the hollow drill cylinder 1 has a first threaded hole 210. The first threaded hole 210 is aligned with the first through hole 11, so that the first threaded hole 210 can be threadedly connected to the drive mechanism 4 through the first through hole 11.

[0048] It should be noted that when the extrusion component 21 does not need to perform extrusion operations, the extrusion component 21 is completely contained within the first vertical slot 10, preventing the surface of the extrusion component 21 from protruding from the inner wall of the hollow drill cylinder 1 and affecting the core drilling effect of the hollow drill cylinder 1; when the extrusion component 21 needs to perform extrusion operations, the entire hollow drill cylinder 1 and the core sample are removed from the hole, and the drive mechanism 4 is threadedly connected to the first threaded hole 210 of the extrusion component 21 outside the hole, and the first vertical slot 10 is slidably moved out through the drive mechanism 4 to extrude and test the splitting strength of the core sample.

[0049] As for detector 20, detector 20 is located on the surface of extrusion component 21 facing the interior of hollow drill barrel 1. Detector 20 adopts a pressure sensor. This type of sensor is a contact sensor and needs to be located at the extrusion position to realize data acquisition and transmission. The sensor data will be transmitted to the display terminal for data display and storage.

[0050] The extrusion component 21 has a mounting hole on the surface facing the inside of the hollow drill cylinder 1, and the detector 20 is placed in the mounting hole. The surface of the detector 20 facing the inside of the hollow drill cylinder 1 is flush with the surface of the extrusion component 21 facing the inside of the hollow drill cylinder 1.

[0051] It should be noted that the wider the width of the extrusion member 21 covering the surface of the detector 20 during extrusion, the greater the contact area of ​​the detector 20 will be. The length of the extrusion member 21 covering the surface of the detector 20 involves different strength conversion coefficients and calculation methods of the detector 20 itself. Those skilled in the art can choose according to their own needs.

[0052] After adopting the above-mentioned setup, the testing device 2 can directly perform core sample strength testing in the original location of the core drill, saving the cost of core sample transportation and testing labor, and can also immediately understand the structural functional indicators of the object to be tested (such as pavement, wall surface and column surface, etc.); on the other hand, it meets the demand for more transverse pressure testing of concrete core samples, and solves the problem that the existing technology cannot meet the requirements for in-situ transverse splitting strength testing of concrete core samples.

[0053] Regarding the aforementioned crushing device 3, such as Figure 1 , Figure 3 and Figure 4 As shown, the crushing device 3 is placed inside the second vertical slot 12. The surface of the crushing device 3 facing the inside of the hollow drill cylinder 1 is provided with crushing cutting teeth. The crushing cutting teeth are strip-shaped diamond cutting teeth that can crush the core-like structure. The crushing device 3 is aligned with the inside of the hollow drill cylinder 1. The surface of the crushing device 3 facing away from the inside of the hollow drill cylinder 1 is provided with a second threaded hole 30. The second threaded hole 30 is threadedly connected to the drive mechanism 4.

[0054] The crushing device 3 is aligned with the inside of the hollow drill cylinder 1, and the surface of the crushing device 3 facing the inside of the hollow drill cylinder 1 is flush with the inner wall surface of the hollow drill cylinder 1. With this arrangement, the crushing device 3 can be aligned with the sample core to perform radial crushing.

[0055] It should be noted that the crushing device 3 has convex walls at the top and bottom, and the second vertical strip hole 12 has grooves at the top and bottom. Multiple grooves are arranged radially, and multiple convex walls are placed in multiple grooves respectively. The surface of the extrusion component 21 facing away from the interior of the hollow drill cylinder 1 has a second threaded hole 30. The second threaded hole 30 is aligned with the second through hole 13, and the second threaded hole 30 is threadedly connected to the drive mechanism 4 through the second through hole 13.

[0056] In addition, after the testing device 2 completes the transverse splitting strength test on the core sample, the crushing device 3 can crush the core sample to be used as filler for repairing the hole. Therefore, the core sample needs to be crushed repeatedly to achieve the backfilling standard that the maximum diameter of the repair filler cannot exceed 1 / 3 of the hole diameter.

[0057] Similar to the detection device 2, when the crushing device 3 does not need to perform crushing operations, the crushing device 3 is completely contained within the second vertical slot 12, preventing the surface of the crushing device 3 from protruding from the inner wall of the hollow drill cylinder 1 and affecting the core drilling effect of the hollow drill cylinder 1; when the crushing device 3 needs to perform extrusion operations, the entire hollow drill cylinder 1 and the core sample are pulled out of the hole, and the drive mechanism 4 is threadedly connected to the second threaded hole 30 of the crushing device 3 outside the hole, and the second vertical slot 12 is slidably moved out through the drive mechanism 4 to crush the core sample.

[0058] After the crushing device 3 adopts the above-mentioned configuration, after the core sample is tested by the core drilling machine, the core sample can be crushed and used as filler to repair the hole. This avoids the problem of directly discarding the core sample in the existing technology, which causes construction waste pollution, and effectively reduces the management cost.

[0059] Regarding the aforementioned drive mechanism 4, as... Figure 1 and Figure 4 As shown, the drive mechanism 4 is used to drive the extrusion component 21 to move into and out of the first vertical strip hole 10, and the drive mechanism 4 is used to drive the crushing device 3 to move into and out of the second vertical strip hole 12; the drive mechanism 4 includes eight hydraulic rods 40, hydraulic pipes 41 and hydraulic pump 42; one end of each of the eight hydraulic rods 40 is threaded, and the threaded end of each of the eight hydraulic rods 40 is threaded to two first threaded holes 210 and six second threaded holes 30; the other end of each of the eight hydraulic rods 40 is connected to the hydraulic pipes 41, and the eight hydraulic pipes 41 are connected to the hydraulic pump 42.

[0060] The hydraulic rod 40 is threaded to both the first and second threads, allowing the hollow drill cylinder 1 and the core sample to be extracted together after drilling. The first threaded hole 210 and the second threaded hole 30 are threaded to the hydraulic rod 40, enabling the detection device 2 and the crushing device 3 to be detachably connected to the drive mechanism 4.

[0061] It should be noted that when core sample testing is to be performed, the two hydraulic rods 40 are respectively threaded to the two first threads, and the hydraulic pump 42 drives the extrusion component 21 of the testing device 2 to extend and retract, so as to extrude the core sample; when core sample crushing is to be performed, the six hydraulic rods 40 are respectively threaded to the six second threads, and the hydraulic pump 42 drives the crushing device 3 to extend and retract, so as to crush the core sample.

[0062] Of course, the length of the hydraulic rod 40 needs to be converted according to the requirements of the splitting test. Specifically, the conversion is to use a cylindrical core sample with a diameter of 80 mm and a height of 50 mm as the standard splitting specimen to obtain the splitting strength and coefficient. When other core samples are used, this coefficient is used as the standard, and the conversion coefficient is obtained by linear fitting through the test. Those skilled in the art can select and calculate according to their own actual needs.

[0063] In addition, the drive mechanism 4 is connected to a wireless remote control terminal, and those skilled in the art can control the drive mechanism 4 to hydraulically drive multiple hydraulic rods 40 via the wireless remote control.

[0064] The above text has already explained the setup and working principle of the main structures of a core drilling machine. However, to more clearly illustrate the application of a core drilling bit that integrates core sample extraction and strength testing, the following text will explain it using a specific core drilling scenario:

[0065] S1, the hollow drill cylinder 1 is aligned with the position of the object to be tested;

[0066] S2, start the motor, the motor drives the hollow drill barrel 1, and the hollow drill barrel 1 performs core sample drilling;

[0067] S3, After the core sample is drilled, remove the hollow drill cylinder 1 and the core sample;

[0068] S4. If a person skilled in the art needs to send the core sample for testing, open the fastening device, rotate it horizontally, take out the core sample for testing, but if a person skilled in the art does not need to send it for testing, connect the hydraulic rod 40 of the drive mechanism 4 to the first threaded hole 210 of the testing device 2.

[0069] S5, start the hydraulic pump 42 of the drive mechanism 4;

[0070] S6, those skilled in the art control the detection device 2 to perform lateral pressure detection on the core sample via a wireless remote control and transmit the data to the display terminal;

[0071] S7. After the core sample pressure test is completed, disconnect the connection between the drive mechanism 4 and the testing device 2, and thread the hydraulic rod 40 of the drive mechanism 4 to the second threaded hole 30 of the crushing device 3.

[0072] S8, those skilled in the art can use a wireless remote control to control the crushing device 3 to crush the core sample multiple times until the standard for backfill material is met and then terminate the process.

[0073] S9, those skilled in the art use the broken core sample as backfill and combine it with quick repair material to pour into the hole for repair;

[0074] S10, disassemble all devices to complete the entire coring, testing and crushing process.

[0075] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A core drilling bit that integrates core sample extraction and strength testing, characterized in that, Includes a hollow drill barrel and a drive mechanism; The inner wall of the hollow drill barrel is provided with a plurality of first vertical slots; Multiple first vertical slots are arranged opposite each other along the axis of the hollow drill cylinder. The outer wall of the hollow drill cylinder is provided with a first through hole at the first vertical slot. A detection device is radially slidably connected inside the first vertical slot. The detection device includes a detector and a squeezing component; The detector is located on the surface of the extrusion member facing the interior of the hollow drill cylinder. The extrusion member is aligned with the interior of the hollow drill cylinder. The extrusion member is detachably connected to the drive mechanism, which is used to drive the extrusion member to move into and out of the first vertical slot.

2. The core drilling bit integrating core sample extraction and strength testing according to claim 1, characterized in that, The detection device is arranged vertically.

3. The core drilling bit integrating core sample extraction and strength testing according to claim 1, characterized in that, The first vertical slots are all located in the middle of the cylinder wall.

4. A core drilling bit integrating core sample extraction and strength testing according to claim 1, characterized in that, The surface of the extrusion component facing the interior of the hollow drill barrel is a plane.

5. A core drilling bit integrating core sample extraction and strength testing according to claim 4, characterized in that, The extrusion component has a mounting hole on its surface facing the inside of the hollow drill cylinder. The detector is placed in the mounting hole, and the surface of the detector facing the inside of the hollow drill cylinder is flush with the surface of the extrusion component facing the inside of the hollow drill cylinder.

6. A core drilling bit integrating core sample extraction and strength testing according to claim 1, characterized in that, The top and bottom of the extrusion component are provided with convex walls, and the top and bottom of the first vertical strip hole are provided with grooves. The plurality of grooves are arranged radially, and the plurality of convex walls are respectively placed in the plurality of grooves. The extrusion component has a first threaded hole on the side facing away from the interior of the hollow drill barrel, and the first threaded hole is threadedly connected to the drive mechanism.

7. A core drilling bit integrating core sample extraction and strength testing according to claim 6, characterized in that, The inner wall of the hollow drill barrel is also provided with a plurality of second vertical slots; Multiple second vertical slots are arranged opposite each other, and a crushing device is radially slidably connected inside the second vertical slot. The outer wall of the hollow drill cylinder is provided with a second through hole at the second vertical slot.

8. A core drilling bit integrating core sample extraction and strength testing according to claim 7, characterized in that, Multiple second vertical slots are arranged in a circumferential direction at 30° to 45°.

9. A core drilling bit integrating core sample extraction and strength testing according to claim 8, characterized in that, The crushing device is aligned with the interior of the hollow drill cylinder, and the surface of the crushing device facing away from the interior of the hollow drill cylinder is provided with a second threaded hole, which is threadedly connected to the drive mechanism.

10. A core drilling bit integrating core sample extraction and strength testing according to claim 9, characterized in that, The drive mechanism includes a hydraulic rod, hydraulic pipe, and hydraulic pump; One end of each of the hydraulic rods is threaded, and the threaded end of each of the hydraulic rods is threadedly connected to a plurality of first threaded holes and a plurality of second threaded holes; The other end of each of the hydraulic rods is connected to a hydraulic pipe, and the hydraulic pipes are connected to the hydraulic pump.

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