Drill core sampling device and method for detecting concrete strength by cambered surface pressing method

Abstract

The application provides a core drilling sampling device and method for detecting concrete strength by means of a cambered surface and a compression method, and belongs to the technical field of building detection. The device comprises a support frame and a support framework. The support framework is provided with a drilling assembly and two groups of lifting assemblies. The drilling frame in the drilling assembly is slidably connected with the support framework through the lifting assemblies. The support framework is provided with a positioning sensor and two groups of linear laser positioners. The laser beams of the two groups of linear laser positioners intersect to form a cross mark. The drilling frame is provided with a positioning plate. The support frame is provided with a force sensor above the support frame. The force sensor is installed at the bottom of the drilling frame and is in contact with the drilling assembly. The support frame is provided with a spraying assembly above the support frame. The support frame is further provided with a laser measuring instrument and a controller. The device is provided with a force sensor on the drilling frame. The force sensor can be used to monitor the force received by the drill bit in real time. Meanwhile, the positioning sensor is used to enable the operator to timely adjust the drilling process in case of unexpected situations.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of building detection, more specifically, particularly relates to a core sampling device and method for detecting concrete strength by using arc surface compression method. BACKGROUND

[0002] The arc surface compression method detection is a method for detecting concrete strength, which drills an arc surface compression specimen on a concrete member, places it in the test space of a concrete compression strength arc surface tester, and performs a series of detection operations to effectively detect the actual compression capacity of the concrete.

[0003] The core sampling device is used for drilling on a concrete member to effectively ensure that the surface of the drilled specimen is smooth and flat, avoid defects such as cracks and notches, and ensure the integrity of the specimen. However, the traditional core sampling device usually only has a simple drilling function and cannot display various parameters in real time during drilling, so that when facing concrete of different strength grades, the operator cannot adjust the drilling strategy in a timely manner according to the actual situation, which may cause deviation of the sampling position, reduce the accuracy of sampling, and make the core sample have defects such as uneven surface and internal cracks. At the same time, it is also easy to cause excessive wear of the drill bit, increasing the equipment wear and replacement cost. SUMMARY

[0004] To solve the above technical problems, the present application provides a core sampling device and method for detecting concrete strength by using arc surface compression method to solve the technical problems in the prior art that the traditional core sampling device cannot display various parameters in real time during drilling, cannot adjust in a timely manner under different conditions, and is easy to cause deviation of the sampling position and wear of the drill bit.

[0005] The purpose and effect of the core sampling device and method for detecting concrete strength by using arc surface compression method of the present application are achieved by the following specific technical means:

[0006] The application is applied to the core drilling equipment for detecting the strength of concrete by the arc surface compression method, which comprises a support frame and a support framework, the support framework is rotatably connected with the support frame, a drilling assembly and two groups of lifting assemblies are arranged on the support framework, the drilling assembly is located between the two groups of lifting assemblies, the drilling assembly comprises a drilling frame, the drilling frame is slidably connected with the support framework through the two groups of lifting assemblies; a positioning sensor and two groups of linear laser positioners are arranged on the support framework, the laser beams of the two groups of linear laser positioners intersect to form a cross mark, and a positioning plate is arranged on the drilling frame corresponding to the positioning sensor; a force sensor is arranged above the support frame, the force sensor is installed at the bottom of the drilling frame and in contact with the drilling assembly; a spraying assembly is arranged above the support frame, and a laser measuring instrument and a controller are also installed on the support frame.

[0007] According to a preferred embodiment, two groups of mounting discs are arranged on the support frame, the support framework is mounted between the two groups of mounting discs and is rotatably connected with the mounting discs, a plurality of limiting plates are arranged on one side of the mounting disc, the support framework is located between the plurality of limiting plates and is in contact with one of the limiting plates; one side of one of the mounting discs is provided with a first motor, the shaft end of the first motor is connected with the support framework, two groups of pressure sensors are arranged at the bottom of the support framework, and the two groups of pressure sensors are symmetrically distributed.

[0008] According to a preferred embodiment, a plurality of support rods are arranged on the support frame, mounting grooves are formed in the support rods, a plurality of slide rails are arranged above the support frame, the slide rails are clamped in the mounting grooves and are connected with the support rods; an electric sliding block is slidably arranged on the slide rail, a mounting frame and an electromagnet are arranged on one side of the electric sliding block, the mounting frame is connected with the electric sliding block, the electromagnet is installed in the mounting frame and is rotatably connected with the mounting frame, a second motor is arranged on one side of the mounting frame, and the shaft end of the second motor is connected with the electromagnet; a plurality of magnetic blocks are arranged on both sides of the support framework, the plurality of magnetic blocks are longitudinally arranged, and the electromagnet is in contact with one of the magnetic blocks.

[0009] According to a preferred embodiment, the drilling assembly further comprises a drilling sleeve and a drilling motor and a drill bit, the drilling motor is installed on the drilling frame, the drilling frame is provided with a bearing, the drilling sleeve is arranged in the bearing, and the top end of the drilling sleeve is connected with the shaft end of the drilling motor; the drill bit is located below the drilling sleeve, the top of the drill bit is provided with a connecting pipe, the connecting pipe is sleeved on the drilling sleeve, the drilling sleeve is provided with connecting studs on both sides, a plurality of connecting sliding grooves are formed in the drilling sleeve, the connecting studs are arranged in the connecting sliding grooves, and the drill bit and the drilling sleeve are slidably connected; a plurality of connecting grooves are formed in the connecting pipe, and the connecting grooves are communicated with the connecting sliding grooves.

[0010] According to a preferred embodiment, the drilling frame and the drill bit are provided with a sliding piece, a plurality of bearings are arranged in the sliding piece, the sliding piece is sleeved on the drilling sleeve through the plurality of bearings, and the bottom of the sliding piece is in contact with the connecting pipe; the bottom of the drilling frame is provided with a mounting clamping groove, the force sensor is mounted in the mounting clamping groove, one end of the sliding piece is provided with a pressing plate, the pressing plate is provided with a protrusion, and the protrusion can be in contact with the force sensor; one end of the drill bit is provided in a sawtooth shape, the top of the drill bit is provided with an annular converging groove, a plurality of guide grooves are formed in the circumferential side of the drill bit, the guide grooves penetrate through the top and the bottom of the drill bit, and the annular converging groove is communicated with the guide grooves.

[0011] According to a preferred embodiment, the bottom of the push rod is provided with a push plate, the push rod is arranged in the drilling sleeve, and the push plate is located in the drill bit; a positioning hole is formed in the push rod, a positioning sliding groove is formed in the drilling sleeve corresponding to the positioning hole, a positioning piece is arranged in the positioning sliding groove and the positioning hole, and the push rod and the drilling sleeve are slidably connected; the drilling sleeve is provided with a fixing stud on both sides, the drilling sleeve is provided with a fixing ring on both sides, and the fixing ring is sleeved on the fixing stud and the positioning piece; one end of the fixing stud is further sleeved with a fixing valve, and the fixing ring is located between the fixing valve and the drilling sleeve.

[0012] According to a preferred embodiment, the spraying assembly comprises a water storage tank and a plurality of spray heads, a detachable mounting plate is arranged above the support frame, the water storage tank is mounted on the mounting plate, a plurality of spray heads are mounted at the bottom of the support frame and symmetrically arranged on both sides of the drilling sleeve; a water pump is arranged on the mounting plate, and the water pump is connected with the water storage tank and the plurality of spray heads through connecting pipes; a protective cover is arranged between the two linear laser positioners, the protective cover is arranged in a funnel shape, and the drill bit can be arranged in the protective cover; the protective cover is made of transparent material, and a through groove is arranged on the protective cover corresponding to the linear laser positioner; a collecting block is arranged on one side of the protective cover, and a collecting groove is arranged on the collecting block, and the opening of the collecting groove faces the inside of the protective cover.

[0013] According to a preferred embodiment, the bottom of the support frame is provided with a plurality of moving wheels and a plurality of universal wheels, a plurality of fixing plates are arranged on both sides of the support frame, a fixing threaded sleeve is arranged on the fixing plate, a plurality of fixing bolts are arranged above the support frame, a rubber block is arranged on the fixing bolt penetrating through the fixing plate, and the rubber block can contact the ground; a storage box is arranged on one side of the support frame, a plurality of lifting assemblies and a plurality of storage tanks are arranged in the storage box, and the storage tank is mounted on the lifting assembly.

[0014] According to a preferred embodiment, the bottom of the support frame is provided with a plurality of moving wheels and a plurality of universal wheels, a plurality of fixing plates are arranged on both sides of the support frame, a plurality of electric cylinders are arranged above the support frame, the electric cylinder is mounted on the fixing plate, a rubber block is arranged on the shaft end of the electric cylinder penetrating through the fixing plate, and the rubber block can contact the ground; a fixing frame is arranged on both sides of the support frame, a rotatable fixing support is arranged between the fixing frames, a rotating motor is arranged on one side of the fixing frame, and the shaft end of the rotating motor is connected with the fixing support; a storage box is arranged on one side of the support frame, a plurality of lifting assemblies and a plurality of storage tanks are arranged in the storage box, and the storage tank is mounted on the lifting assembly.

[0015] A core drilling method, using the core drilling equipment for testing the strength of concrete by arc surface compression method, comprises the following steps:

[0016] Step 1: equipment preparation and positioning;

[0017] The core drilling equipment is moved to the detection site, according to the actual situation of the site, through adjusting the multiple groups of moving wheels and universal wheels at the bottom of the support frame, starting two groups of linear laser positioners, the laser beams of the two groups of linear laser positioners intersect to form a cross mark, aiming the cross mark at the position needing core drilling sampling, completing the preliminary positioning; at the same time, using the fixed threaded sleeves and fixed bolts on the fixed plates on both sides of the support frame, rotating the fixed bolts to make the rubber blocks contact with the ground to fix the equipment;

[0018] Step two: selection of drilling direction;

[0019] According to the need, select the ground or wall surface sampling, start the first motor, the first motor shaft end drives the support frame to rotate between the two groups of mounting discs, adjust the angle of the support frame, so that the drilling assembly is aligned with the positioning point; when the ground sampling, the support frame is perpendicular to the support frame, the drilling assembly faces the ground, when the wall surface sampling, the support frame is parallel to the support frame, the drilling assembly faces the wall surface; at the same time, move the whole equipment, the support frame bottom contacts with the wall surface, the two groups of pressure sensors at the bottom of the support frame are stressed, the data is transmitted to the controller, to ensure the accuracy of the position of the equipment and the wall surface;

[0020] At the same time, according to the need, further fix the support frame by using the cooperation of electromagnet and magnetic block; start the electric sliding block, make it slide on the slide rail to one of the magnetic blocks, the electromagnet in the mounting frame rotates under the drive of the second motor, contacts and absorbs one of the magnetic blocks arranged longitudinally on both sides of the support frame, to enhance the stability of the support frame;

[0021] Step three: adjustment of drilling assembly;

[0022] Start two groups of the lifting assembly, drive the drilling frame to slide on the support frame through the lifting assembly, adjust the height of the drilling frame, so that the drill bit approaches the concrete detection part; the positioning sensor detects the position of the positioning plate on the drilling frame, to ensure the accuracy of the position of the drilling frame, and prepare for subsequent drilling;

[0023] Step four: core sampling

[0024] Start the drilling motor, the drilling motor drives the drilling sleeve to rotate, the drilling sleeve in turn drives the drill bit to rotate at high speed; start the spray assembly, the water in the water storage tank is transported to the multiple groups of spray heads symmetrically distributed at the bottom of the drilling frame by the water pump through the connecting conduit, the drill bit and the drilling site are sprayed for cooling and slag removal; in the drilling process, the force sensor monitors the force received by the drill bit in real time, and transmits data to the controller, the controller adjusts the rotating speed of the drilling motor and the lifting speed of the lifting assembly according to the change of the force, ensures that the drilling process proceeds smoothly, and stops the drilling motor and the lifting assembly when the drill bit reaches the predetermined depth;

[0025] Step five: the core sample is taken out;

[0026] The fixed valve at one end of the fixing stud is unscrewed, the fixed ring is removed, the positioning member is pushed downward, the push rod can slide freely in the drilling sleeve, the push rod is pushed, and the push plate at the bottom of the push rod pushes the core sample in the drill hole out of the drill bit; the taken-out core sample is temporarily placed in the storage tank for subsequent arc surface compression method detection concrete strength test.

[0027] Compared with the prior art, the present application has the following beneficial effects:

[0028] 1. The force sensor is installed at the bottom of the drilling frame and contacts the drilling assembly, which can monitor the force received by the drill bit in real time during the drilling process and transmit data to the controller; at the same time, the positioning sensor is arranged on the support frame, the positioning sensor can effectively detect the position of the positioning plate on the drilling frame, so that the drilling depth and other related data of the drill bit can be obtained in real time, and the rotating speed of the drilling motor and the lifting speed of the lifting assembly can be adjusted according to the change of the force and the drilling depth and other information. For example, when the force sensor detects that the force received by the drill bit abnormally increases, the controller can reduce the rotating speed of the drilling motor to facilitate the operator to handle in time, so as to avoid the sampling position deviation and the excessive wear of the drill bit caused by the failure of timely adjustment of parameters.

[0029] 2. Two sets of linear laser positioners are arranged on the support frame, and the laser beams of the two sets of linear laser positioners intersect to form a cross mark, which can accurately align the position requiring core sampling and provide accurate positioning reference for subsequent drilling; at the same time, a laser measuring instrument is also installed on the support frame, and the laser measuring instrument and the support frame are rotatably connected, so that the distance between the device and the surrounding wall or object can be effectively measured, thereby obtaining the accurate position; the water in the water storage tank of the spraying assembly is transported to the multiple groups of nozzles symmetrically distributed at the bottom of the drilling frame under the action of the water pump, and the drilling head and the drilling position are sprayed and cooled and the slag is discharged, so that the drilling head works at an appropriate temperature, prolongs the service life, and prevents the accumulation of drilling chips from affecting the drilling quality; at the same time, the setting of the annular collecting groove and the flow guide groove on the drilling head makes the water flow collected in the annular collecting groove flow rapidly to the bottom of the drilling head through multiple groups of flow guide grooves, and the design that the flow guide grooves penetrate through the top and bottom of the drilling head ensures that the water flow can smoothly flow in the entire length direction of the drilling head, uniformly distributes the water flow in the circumferential direction of the top of the drilling head, and makes the water flow more comprehensively cover the drilling head, thereby improving the cooling effect. The protective cover arranged between the support frames is funnel-shaped and made of transparent material, which can prevent debris from splashing during drilling and protect the safety of the operator, and the through slot opened on the protective cover corresponding to the linear laser positioner does not affect the positioning operation, and the collecting block and the collecting groove arranged on one side can effectively collect drilling chips and waste water, keep the working environment clean, and ensure that the core sampling work is safely and high-quality performed.

[0030] 3. Multiple groups of moving wheels and universal wheels are arranged at the bottom of the support frame, so that the device can be quickly moved to the specified detection position. When the device is fixed, the fixed threaded sleeve and the fixed bolt on the two side fixed plates of the support frame are rotated to make the rubber block contact the ground, so that the device can be stably fixed. When the drilling direction is adjusted, the first motor is started, the shaft end drives the support frame to rotate between the two groups of mounting discs, the angle of the support frame can be easily adjusted, and the sampling requirements of different positions such as the ground or the wall surface can be met. In addition, the electromagnet in the mounting frame is brought into contact and adsorption with the magnetic attraction block on the two sides of the support frame through the sliding of the electric sliding block on the sliding rail, so that the stability of the support frame is further enhanced, the whole operation process is simple and convenient, and the working efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a structure schematic diagram of an embodiment of the present application after assembly;

[0032] Figure 2 is a structure schematic diagram of an embodiment of the present application after disassembly;

[0033] Figure 3 is a structure schematic diagram of a spraying assembly after disassembly;

[0034] Figure 4is a structural schematic diagram of the embodiment two of the present application after being split;

[0035] Figure 5 is a structural schematic diagram of the drilling assembly after being split;

[0036] Figure 6 is a structural schematic diagram of the push rod;

[0037] Figure 7 is a structural schematic diagram of the sliding member;

[0038] Figure 8 is a structural schematic diagram of the drilling frame;

[0039] Figure 9 is Figure 5 is a partial enlarged view of the a area in the figure;

[0040] Figure 10 is Figure 5 is a partial enlarged view of the b area in the figure;

[0041] Figure 11 is a structural schematic diagram of the protective cover;

[0042] Figure 12 is a step flow chart of a core drilling method;

[0043] Figure 13 is a principle block diagram of the controller.

[0044] In the figure, the corresponding relationship between the component names and the reference signs is as follows:

[0045] 101, support frame; 102, mounting disc; 103, limiting plate; 104, first motor; 105, pressure sensor; 106, support rod; 107, mounting groove; 108, slide rail; 109, electric sliding block; 110, mounting frame; 111, electromagnet; 112, second motor; 113, magnetic suction block; 114, fixed plate; 115, fixed threaded sleeve; 201, support frame; 202, positioning sensor; 203, linear laser positioner; 204, laser measuring instrument; 205, controller; 301, drilling frame; 302, positioning plate; 303, force sensor; 304, drilling sleeve; 305, drilling motor; 306, drill bit; 307, connecting pipe; 308, connecting stud; 309, connecting groove; 310, sliding piece; 311, mounting clamping groove; 312, extrusion plate; 313, annular bus groove; 314, flow guide groove; 315, push rod; 316, push plate; 317, positioning hole; 318, positioning sliding groove; 319, positioning piece; 320, fixed stud; 321, fixed ring; 322, fixed valve; 401, water storage tank; 402, spray head; 403, mounting plate; 404, water pump; 405, protective cover; 406, through groove; 407, collection block; 408, collection groove; 501, fixed peg; 502, rubber block; 503, reserve tank; 504, storage tank; 505, electric cylinder; 506, fixed frame; 507, fixed support; 508, rotating motor; 601, connecting sliding groove. DETAILED DESCRIPTION

[0046] The embodiments of the present application will be further described in conjunction with the drawings and examples. The following examples are used to illustrate the technical solutions of the present application, but cannot be used to limit the protection scope of the present application.

[0047] Example 1

[0048] As Figures 1 to 13As shown, the present application provides a core drilling equipment for detecting concrete strength by using the method of cambered surface pressing, which comprises a support frame 101 and a support frame 201. The support frame 101 serves as the basic structure of the whole core drilling equipment and plays a role of bearing. The support frame 201 is rotatably connected with the support frame 101, so that the support frame 201 can be adjusted in angle within a certain range to adapt to different construction scenes and sampling requirements, and the operation of sampling ground concrete or wall concrete can be realized. A drilling assembly and two sets of lifting assemblies are arranged on the support frame 201. The drilling assembly is between the two sets of lifting assemblies, and they work cooperatively to provide necessary conditions for drilling operation. During the core sampling process, the two sets of lifting assemblies can control the movement of the drilling assembly in the vertical direction. When it is necessary to start the drilling operation, the drilling assembly can be stably lowered to the appropriate height by operating the lifting assembly, so as to approach the surface of the concrete to be drilled. During the drilling process, if different drilling depths are required, the lifting assembly can adjust the height of the drilling assembly at any time according to the corresponding instructions, so as to ensure that the drilling work can be smoothly carried out. At the same time, the drilling assembly can pause and continue the drilling operation at different positions under the cooperation of the lifting assembly, so as to ensure that the sampling can be carried out for concrete structures with different depths and different strengths during drilling. The drilling frame 301 in the drilling assembly is slidably connected with the support frame 201 through the two sets of lifting assemblies. During actual use, the lifting assembly can drive the drilling frame 301 to move up and down, so that the drilling operation can be carried out at different height positions to meet the core sampling requirements of concrete at different heights. A positioning sensor 202 and two sets of linear laser positioners 203 are arranged on the support frame 201. The positioning sensor 202 can sense the position information of the drilling frame 301 to provide data basis for subsequent operation in terms of position. The positioning sensor 202 can adopt an Omron E2E-X10Y1-M1J positioning sensor. The laser beams emitted by the two sets of linear laser positioners 203 cross each other to form a cross mark. The cross mark can assist the operator to align the equipment with the area to be sampled during the core sampling process, which is convenient for operation. The linear laser positioner 203 can adopt a Raytheon LRS-3030-660-30G laser positioner. The positioning plate 302 corresponding to the positioning sensor 202 is arranged on the drilling frame 301. The positioning plate 302 cooperates with the positioning sensor 202 to help realize accurate position confirmation of the drilling frame 301. A force sensor 303 is arranged above the support frame 101. The force sensor 303 is installed at the bottom of the drilling frame 301 and contacts with the drilling assembly. During the drilling process, the force sensor 303 can monitor the force borne by the drilling assembly, such as measuring the force acting on the drill bit 306 when the drill bit 306 drills the concrete, and transmitting these data to the controller 205. A spraying assembly is also arranged above the support frame 101. The spraying assembly plays an important role during the drilling process, which can provide necessary cooling and slag removal and other auxiliary functions for the drilling operation.Meanwhile, a laser measuring instrument 204 and a controller 205 are also installed on the support frame 101. The laser measuring instrument 204 can measure some dimensions or distances, providing reference information for operators. The laser measuring instrument 204 can be a Leica DISTO D2 laser measuring instrument. The controller 205 is used to control and coordinate the various operations of the entire equipment to ensure the orderly operation of the equipment. The controller 205 can be a Delta DVP-40ES2 controller.

[0049] like Figure 1 , Figure 2 As shown, the support frame 101, as a key support structure of the entire core drilling and sampling equipment, plays a crucial role in stabilizing the equipment. Two sets of mounting plates 102 are installed above it, securing the support frame 201 between them. The support frame 201 and the mounting plates 102 are rotatably connected, allowing the support frame 201 to be angled and switch between wall concrete and floor concrete surfaces. Multiple sets of limiting plates 103 are distributed on one side of the mounting plates 102. These limiting plates 103 are neatly arranged, restricting the rotation range of the support frame 201. The support frame 201 is positioned between the multiple sets of limiting plates 103 and is in contact with one set of limiting plates 103. When the support frame 201 rotates, the limiting plates 103 effectively prevent excessive rotation, ensuring the stability of the equipment operation. On one side of one of the mounting discs 102, a first motor 104 is installed. The shaft of the first motor 104 is directly connected to the support frame 201. When the angle of the support frame 201 needs to be adjusted, the first motor 104 is started. The rotation of the motor shaft causes the support frame 201 to rotate smoothly between the two mounting discs 102, thereby meeting the core sampling requirements at different angles. At the bottom of the support frame 201, two sets of pressure sensors 105 are also installed, symmetrically distributed below the support frame 201.

[0050] When the device is in operation, the pressure sensor 105 can monitor the changes in pressure on the bottom of the support frame 201 in real time, providing data reference for the operating state of the device. When sampling the wall surface concrete, the support frame 201 is in contact with the wall surface, and the pressure sensor 105 on the bottom is subjected to pressure, which can effectively detect the pressure distribution between the device and the wall surface. By analyzing the data collected by the pressure sensor 105, it can be determined whether the device is stably attached to the wall surface, avoiding drilling errors caused by unstable placement of the device. In addition, these pressure data can also be used to monitor the impact of vibrations generated during drilling on the contact state between the device and the wall surface. If there are abnormal fluctuations in pressure during drilling, it may mean that the vibration caused by drilling is too large, and drilling parameters need to be adjusted to reduce vibration and ensure stable contact between the device and the wall surface. Moreover, the data of the pressure sensor 105 can help the operator to evaluate the bearing capacity of the wall surface, to ensure that the drilling operation does not cause additional damage to the wall structure, and at the same time, to provide important basic information for subsequent data processing and result analysis, to ensure that the whole drilling core sampling process is more safe and efficient, to improve the quality and reliability of the wall surface concrete drilling core sampling. The pressure sensor 105 can use Honeywell SLPX001ND1A3 pressure sensor.

[0051] These installation grooves 107 provide mounting positions for multiple groups of sliding rails 108, which are clamped in the installation grooves 107, thereby being stably connected with the support rods 106. On the sliding rails 108, electric sliding blocks 109 are slidably arranged, which are like moving platforms, freely sliding on the sliding rails 108. One side of the electric sliding block 109 is connected with a mounting bracket 110, in which an electromagnet 111 is installed, and the electromagnet 111 is rotatably connected with the mounting bracket 110. On one side of the mounting bracket 110, a second motor 112 is installed, and the shaft end of the second motor 112 is connected with the electromagnet 111. When it is necessary to adjust the angle of the electromagnet 111, the second motor 112 is started to drive the electromagnet 111 to rotate. On both sides of the support frame 201, multiple groups of magnetic suction blocks 113 are arranged longitudinally, and when the electric sliding block 109 slides to the appropriate position, the electromagnet 111 rotates and contacts with one of the groups of magnetic suction blocks 113, and through magnetic attraction, the stability of the support frame 201 is further enhanced, providing reliable guarantee for the drilling core sampling work.

[0052] As Figures 5 to 10As shown, the drilling assembly further comprises a drilling sleeve 304, a drilling motor 305 and a drill bit 306. The drilling motor 305 is installed on the drilling frame 301 to provide power source for drilling operation. The drilling frame 301 is provided with a bearing, and the drilling sleeve 304 is arranged in the bearing and connected with the shaft end of the drilling motor 305. When the drilling motor 305 is started, it will drive the drilling sleeve 304 to rotate at high speed. The drill bit 306 is located below the drilling sleeve 304, and the top of the drill bit 306 is provided with a connecting pipe 307 which is sleeved on the drilling sleeve 304. The drilling sleeve 304 is provided with connecting studs 308 on both sides, and a plurality of connecting sliding grooves 601 are formed in the drilling sleeve 304. The connecting studs 308 are arranged in the connecting sliding grooves 601, so that the drill bit 306 and the drilling sleeve 304 are slidably connected, and the drill bit 306 can move on the drilling sleeve 304 within a certain range. A connecting groove 309 is formed in the connecting pipe 307, and the connecting groove 309 is communicated with the connecting sliding grooves 601, so that the drill bit 306 can be installed on the drilling sleeve 304, and the connection between the drill bit 306 and the drilling sleeve 304 is more stable and convenient, and the whole drilling assembly can operate normally in the subsequent core sampling operation.

[0053] A sliding member 310 is arranged between the drilling frame 301 and the drill bit 306. The sliding member 310 is provided with a plurality of bearings, and is sleeved on the drilling sleeve 304 through the bearings and can slide along the drilling sleeve 304. The bottom of the sliding member 310 is in contact with the connecting pipe 307. The bottom of the drilling frame 301 is provided with a mounting clamping groove 311, and the force sensor 303 is installed in the mounting clamping groove 311. One end of the sliding member 310 is provided with an extrusion plate 312, and the extrusion plate 312 is provided with a protrusion. During drilling, when the drill bit 306 contacts the concrete, the drill bit 306 can move upward by a certain distance, so that the drill bit 306 can move against the sliding member 310, and the extrusion plate 312 on the sliding member 310 can contact the force sensor 303 through the protrusion. The force sensor 303 can sense the force acting on the drill bit 306 and transmit data to the control system. One end of the drill bit 306 is provided with a sawtooth shape, which can cut into the concrete more effectively and enhance the drilling capacity when drilling the concrete. The top of the drill bit 306 is provided with an annular flow collecting groove 313, and a plurality of guide grooves 314 are formed in the side of the drill bit 306. The guide grooves 314 penetrate through the top and bottom of the drill bit 306, and the annular flow collecting groove 313 is communicated with the guide grooves 314. When the spraying assembly works, the water flow sprayed on the drill bit 306 will first gather in the annular flow collecting groove 313 and then flow to the bottom of the drill bit 306 through the guide grooves 314, which can cool and discharge the slag of the drill bit 306, ensure the smooth drilling operation and prolong the service life of the drill bit 306.

[0054] The push rod 315 is provided below the drilling frame 301, the bottom of the push rod 315 is provided with a push plate 316, the drilling sleeve 304 and the drill bit 306 are through, the push rod 315 is arranged in the drilling sleeve 304, and the push plate 316 is located in the drill bit 306. When the core sample is taken out, the push plate 316 extrudes the core sample in the drill bit 306 through the push rod 315; meanwhile, a plurality of reinforcing ribs are arranged on the inner wall of the drilling sleeve 304, and the push rod 315 is provided with a clamping groove corresponding to the reinforcing ribs, the reinforcing ribs are clamped in the clamping groove, so that the drilling sleeve 304 can still maintain good structural stability when bearing the strong force generated by the high-speed rotation of the drill bit 306 driven by the drilling motor 305, and deformation or damage is avoided. The push rod 315 is provided with a positioning hole 317, the drilling sleeve 304 is provided with a positioning sliding groove 318 corresponding to the positioning hole 317, and a positioning piece 319 is arranged in the positioning sliding groove 318 and the positioning hole 317, so that the push rod 315 and the drilling sleeve 304 can be slidably connected. During the drilling process, the push rod 315 can maintain a stable position state through cooperation of the positioning piece 319 in the positioning sliding groove 318 and the positioning hole 317, and will not move randomly. When the core sample needs to be pushed, the positioning piece 319 is only needed to be operated to be separated from the limitation of the positioning sliding groove 318 and the positioning hole 317, so that the push rod 315 can be slid in the drilling sleeve 304. The drilling sleeve 304 is provided with a fixing screw column 320 on both sides, and the drilling sleeve 304 is also provided with a fixing ring 321 on both sides, and the fixing ring 321 is sleeved on the fixing screw column 320 and the positioning piece 319. One end of the fixing screw column 320 is also sleeved with a fixing valve 322, and the fixing ring 321 is located between the fixing valve 322 and the drilling sleeve 304. When the equipment is normally working, the fixing valve 322 is tightened on the fixing screw column 320, the fixing ring 321 is fixed on the drilling sleeve 304, and then the stability of the positioning piece 319 is ensured, and accidental movement is prevented.

[0055] As Figure 2 , Figure 3 , Figure 11As shown, the spray assembly includes a water storage tank 401 and multiple groups of spray heads 402. A detachable mounting plate 403 is arranged above the support frame 101. The water storage tank 401 is mounted on the mounting plate 403, facilitating cleaning, maintenance and replacement of the water storage tank 401. The multiple groups of spray heads 402 are mounted at the bottom of the drilling frame 301, located on both sides of the drilling sleeve 304 and symmetrically distributed. The mounting plate 403 is provided with a water pump 404. The water pump 404 is connected to the water storage tank 401 and the multiple groups of spray heads 402 through connecting conduits. When the drilling operation starts, the water pump 404 is started to deliver water in the water storage tank 401 to the spray heads 402 through the connecting conduits. The water sprayed by the spray heads 402 cools and removes slag from the drill bit 306 and the drilling site, ensuring smooth drilling process. Protective covers 405 are arranged between the support frames 201 and located between the two groups of linear laser positioners 203. The protective cover 405 is in the shape of a funnel, and the drill bit 306 can be arranged in the protective cover 405. This funnel shape can effectively block the debris generated during drilling from splashing. The protective cover 405 is made of transparent material, which allows the operator to clearly observe the internal situation when the equipment is working. The protective cover 405 is provided with a through slot 406 corresponding to the linear laser positioner 203, which does not affect the positioning function. A collection block 407 is arranged on one side of the protective cover 405. The collection block 407 is provided with a collection groove 408. The opening of the collection groove 408 faces the inside of the protective cover 405, which can collect the debris and waste water falling from the protective cover 405, keeping the working environment clean.

[0056] As Figure 2 、 Figure 3As shown, the bottom of the support frame 101 is provided with multiple sets of moving wheels and multiple sets of universal wheels, which makes the device convenient to transport and transfer to the work site. The moving wheels can bear the weight of the device and provide stable support. Multiple sets of fixed plates 114 are provided on both sides of the support frame 101, and fixed threaded sleeves 115 are provided on the fixed plates 114. At the same time, multiple sets of fixed pins 501 are provided on the top of the support frame 101, the fixed pins 501 pass through the fixed plates 114 and are provided with rubber blocks 502 at the ends. After the device is moved to the designated position, the operator rotates the fixed pins 501, causing the rubber blocks 502 to gradually descend and come into contact with the ground. As the fixed pins 501 are further tightened, a large frictional force is generated between the rubber blocks 502 and the ground, thereby fixing the device to the ground and preventing displacement of the device during core sampling, ensuring the stability of the drilling work. A storage box 503 is provided on one side of the support frame 101, which provides a convenient storage space for the continuous operation of the device. Multiple sets of lifting assemblies and multiple sets of storage tanks 504 are provided inside the storage box 503, and the storage tanks 504 are installed on the lifting assemblies. These storage tanks 504 can be used for core samples after drilling. When the items in the storage tanks 504 need to be taken out, the lifting assemblies can lift the storage tanks 504 to an appropriate height, making it convenient for the operator to take them out, improving work efficiency and making the use of the device more convenient and orderly. The lifting assembly includes a lifting frame, and electric lifting rods are provided on both sides of the lifting frame. One end of the electric lifting rod is connected to the storage box 503, and the other end is in contact with the lifting frame, so that the lifting height of the lifting assembly can be controlled by the electric lifting rod. When the items in the storage tanks 504 need to be taken out, the electric lifting rod is started, and after being powered on, it begins to work, slowly lifting the lifting frame from the end in contact with the lifting frame, making it convenient for the operator to take out the core samples. At the same time, multiple sets of identifiable modules are provided in the storage box 503, and the storage tanks 504 are provided with identification blocks that can be detected by the identifiable modules. When the storage tanks 504 are placed on the lifting frame, the identifiable modules begin to work. These identifiable modules can capture the signals emitted by the identification blocks, and then identify the position and information of the storage tanks 504. The operator can intuitively understand the position distribution of the storage tanks 504 in the storage box 503 and the related information of the items stored in each storage tank 504 through the controller 205 of the device. The identifiable modules can also monitor the state of the storage tanks 504 in real time. Once it is found that the position of the storage tank 504 has deviated or the identification block has failed and cannot be normally identified, the system will immediately issue an alarm to remind the worker.This not only improves the efficiency of the management of the items, but also guarantees the order of the items stored in the storage box 503, ensures that the core drilling sampling work can be carried out smoothly, reduces the time wasted due to searching for items or equipment failure, and the recognizable module can adopt a common UWB3000 module.

[0057] A core drilling sampling method using the core drilling sampling equipment for detecting the strength of concrete by the arc surface compression method, comprising the following steps:

[0058] Step one: equipment preparation and positioning;

[0059] The core drilling sampling equipment is moved to the detection site, and according to the actual situation on site, the operator pushes the equipment, uses the multiple groups of moving wheels and universal wheels at the bottom of the support frame 101 to move flexibly on different terrains, and successfully arrives at the designated location; after arriving, the two groups of linear laser positioners 203 are started, the laser beams of the two groups of linear laser positioners 203 intersect to form a cross mark, and the worker carefully aligns the cross mark with the position where core drilling sampling is needed, thereby completing preliminary positioning; at the same time, the fixed threaded sleeves 115 and fixed bolts 501 on the fixed plates 114 on both sides of the support frame 101 are used, the operator manually rotates the fixed bolt 501, and as the fixed bolt 501 rotates, the rubber block 502 gradually descends until it comes into contact with the ground, and through the friction force generated between the rubber block 502 and the ground, the equipment is stably fixed on the ground to prevent displacement in subsequent operations

[0060] Step two: selection of the drilling direction;

[0061] According to the actual detection requirements, it is determined whether to select the ground or the wall surface for sampling; if ground sampling is needed, the first motor 104 is started, the shaft end of the first motor 104 drives the support frame 201 to rotate between the two groups of mounting discs 102, the angle of the support frame 201 is adjusted, and the drilling assembly is vertically downwardly aligned with the ground positioning point; if wall surface sampling is needed, the first motor 104 is also started, and the support frame 201 is adjusted to a state parallel to the support frame 101, so that the drilling assembly is directed toward the positioning point of the wall surface; when sampling the wall surface, the entire equipment is moved so that the bottom of the support frame 201 comes into contact with the wall surface, at which time the two groups of pressure sensors 105 at the bottom of the support frame 201 are stressed, and the pressure data is transmitted to the controller 205 in real time, and the operator fine-tunes the position of the equipment according to these data to ensure that the equipment is properly positioned with the wall surface;

[0062] Meanwhile, according to the actual situation, the electromagnetic iron 111 and the magnetic block 113 are used to further fix the support frame 201; the electric sliding block 109 is started, and the electric sliding block 109 slides on the slide rail 108 to one of the groups of magnetic blocks 113; the electromagnetic iron 111 in the mounting frame 110 is driven by the second motor 112 to rotate, so that it is in contact with and attracted to one of the groups of magnetic blocks 113 arranged longitudinally on both sides of the support frame 201, thereby further enhancing the stability of the support frame 201 and preventing shaking during drilling;

[0063] Step three: adjusting the drilling assembly;

[0064] The two groups of lifting assemblies are started, and the lifting assemblies start to work to drive the drilling frame 301 to slide slowly on the support frame 201; the operator adjusts the height of the drilling frame 301 by observing the equipment instruments or real-time feedback information, so that the drill bit 306 gradually approaches the concrete detection part; in this process, the positioning sensor 202 continuously detects the position of the positioning plate 302 on the drilling frame 301, and once a position deviation is found, it is fed back to the operator in time, and the operator adjusts according to the feedback to ensure the accurate position of the drilling frame 301, and fully prepares for the subsequent drilling work;

[0065] Step four: drilling core sampling;

[0066] The drilling motor 305 is started, the drilling motor 305 is powered on and runs, drives the drilling sleeve 304 to start rotating, and the drilling sleeve 304 in turn drives the drill bit 306 to rotate at high speed; then the spraying assembly is started, the water in the water storage tank 401 is transported to the multiple groups of nozzles 402 symmetrically distributed at the bottom of the drilling frame 301 through the connecting conduit under the action of the water pump 404, and the water sprayed by the nozzles 402 is evenly sprayed on the drill bit 306 and the drilling hole part, and the drill bit 306 is sprayed and cooled, and at the same time, the drill bit 306 is washed away, and the function of slag removal is achieved; during the drilling process, the force sensor 303 monitors the force received by the drill bit 306 in real time, and transmits the data to the controller 205; the controller 205 automatically or manually adjusts the rotating speed of the drilling motor 305 and the lifting speed of the lifting assembly according to the change of the force, so as to ensure the smooth progress of the drilling process; when the drill bit 306 reaches the predetermined depth, the drilling motor 305 and the lifting assembly are stopped in time, and the drilling operation is ended;

[0067] Step five: taking out the core sample;

[0068] Screw off the fixed valve 322 at one end of the fixed stud 320, take off the fixed ring 321 from the fixed stud 320 and the positioning member 319, then push down the positioning member 319, so that the push rod 315 can freely slide in the drilling sleeve 304; the operator holds the push rod 315 and slowly pushes it, the push plate 316 at the bottom of the push rod 315 slowly pushes the core sample in the drill hole out of the drill bit 306; after taking out the core sample, it is temporarily placed in the storage tank 504, and waits for subsequent use for the arc surface compression method for detecting the concrete strength test, to provide a key sample for accurately evaluating the concrete strength.

[0069] Embodiment two:

[0070] Based on the core sampling equipment and method for detecting the concrete strength by the arc surface compression method provided in embodiment one of the present application, embodiment two of the present application provides the core sampling equipment and method for detecting the concrete strength by the arc surface compression method. The implementation of embodiment two does not affect the implementation of embodiment one. Embodiment two of the present application will be further described below.

[0071] As Figure 3 , Figure 4As shown, the bottom of the support frame 101 is provided with a plurality of groups of mobile wheels and a plurality of groups of universal wheels, which makes the device convenient to transport and transfer to the work site. The mobile wheels can bear the weight of the device and provide stable support. A plurality of fixed plates 114 are arranged on both sides of the support frame 101. A plurality of electric cylinders 505 are installed above the fixed plates 114 and connected to the fixed plates 114. The shaft end of the electric cylinder 505 penetrates through the fixed plate 114 and is connected to the rubber block 502. When the device reaches the predetermined position, the electric cylinder 505 is started, the shaft end slowly extends, and the rubber block 502 is lowered until it comes into contact with the ground. As the electric cylinder 505 further elongates, sufficient friction is generated between the rubber block 502 and the ground, firmly fixing the device and preventing displacement during core sampling operations. Fixed frames 506 are also provided on both sides of the support frame 101. A rotatable fixed support 507 is installed between the two fixed frames 506. A rotating motor 508 is provided on one side of the fixed frame 506, and the shaft end of the rotating motor 508 is connected to the fixed support 507. When it is necessary to adjust the angle of the fixed support 507, the rotating motor 508 is started, and the motor operates to rotate the fixed support 507 to meet different support or fixing requirements, providing additional stable support for the device. A storage box 503 is provided on one side of the support frame 101. The storage box 503 provides a convenient storage space for the continuous operation of the device. A plurality of lifting assemblies and a plurality of storage tanks 504 are arranged inside the storage box 503, and the storage tanks 504 are installed on the lifting assemblies. These storage tanks 504 can be used for drilling core samples after drilling. When it is necessary to access the items in the storage tank 504, the lifting assembly can lift the storage tank 504 to an appropriate height, making it convenient for the operator to take and improving work efficiency, and making the use of the device more convenient and orderly. The lifting assembly includes a lifting frame. Electric lifting rods are arranged on both sides of the lifting frame. One end of the electric lifting rod is connected to the storage box 503, and the other end is in contact with the lifting frame. Thus, the lifting height of the lifting assembly can be controlled through the electric lifting rod. When it is necessary to take items from the storage tank 504 in the storage box 503, the electric lifting rod is started. After the electric lifting rod is powered on, it starts to work, and the end in contact with the lifting frame slowly lifts the lifting frame, making it convenient for the operator to take the core samples. Meanwhile, a plurality of identifiable modules are arranged in the storage box 503. The storage tank 504 is provided with an identification block that can be detected by the identifiable module. When the storage tank 504 is placed on the lifting frame, the identifiable module starts to work. These identifiable modules can capture the signals emitted by the identification block, and then identify the position and information of the storage tank 504. The operator can intuitively understand the position distribution of the storage tank 504 in the storage box 503 and the related information of the items stored in each storage tank 504 through the controller 205 of the device.The identifiable module can also monitor the state of the storage tank 504 in real time, and once it is found that the position of the storage tank 504 deviates or the identification block fails to be normally identified, the system will immediately issue an alarm to remind the staff. This not only improves the efficiency of the article management, but also guarantees the order of the article storage in the storage tank 503, ensures that the core drilling sampling work can be smoothly carried out, and reduces the time wasted due to the search for articles or equipment failure.

[0072] The difference between the second embodiment and the first embodiment is that a plurality of electric cylinders 505 are installed above the two side fixed plates 114 of the support frame 101, the shaft ends of the electric cylinders 505 pass through the fixed plates 114 to connect the rubber blocks 502, after the equipment reaches the predetermined position, the electric cylinders 505 are started to control the rubber blocks 502 to descend and contact the ground to fix the equipment, and the automatic fixing can be realized through the electric cylinders 505; at the same time, the fixed frames 506 are additionally arranged on the two sides of the support frame 101, the rotatable fixed support 507 is installed between the two fixed frames 506, the rotating motor 508 is further arranged on one side of the fixed frame 506 and connected with the fixed support 507, when it is needed to adjust the angle of the fixed support 507, the rotating motor 508 can be started to meet different support or fixing requirements, and provide additional stable support for the equipment. The remaining conditions are the same as those of the first embodiment, and therefore the second embodiment will not be described in detail.

[0073] The basic principles and main features of the present application and the advantages of the present application are shown and described above, and it is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments.

Claims

1. A core drilling device for detecting the strength of concrete by using the method of arc surface pressure, comprising a support frame (101) and a support frame (201), characterized in that: The support frame (201) is rotatably connected with the support frame (101), the support frame (201) is provided with a drilling assembly and two groups of lifting assemblies, the drilling assembly is located between the two groups of lifting assemblies, the drilling assembly comprises a drilling frame (301), and the drilling frame (301) is slidably connected with the support frame (201) through the two groups of lifting assemblies; the support frame (201) is provided with a positioning sensor (202) and two groups of linear laser positioners (203), the laser beams of the two groups of linear laser positioners (203) intersect to form a cross mark, and the drilling frame (301) is provided with a positioning plate (302) corresponding to the positioning sensor (202); a force sensor (303) is arranged above the support frame (101), the force sensor (303) is installed at the bottom of the drilling frame (301) and in contact with the drilling assembly; a spraying assembly is arranged above the support frame (101), and a laser measuring instrument (204) and a controller (205) are further installed on the support frame (101); Two groups of mounting discs (102) are arranged on the support frame (101), the support frame (201) is mounted between the two groups of mounting discs (102) and is rotatably connected with the mounting discs (102), a plurality of limiting plates (103) are arranged on one side of the mounting disc (102), the support frame (201) is located between the plurality of limiting plates (103) and is in contact with one of the limiting plates (103); one side of one of the mounting discs (102) is provided with a first motor (104), the shaft end of the first motor (104) is connected with the support frame (201), and two groups of pressure sensors (105) are arranged at the bottom of the support frame (201); the two groups of pressure sensors (105) are symmetrically distributed; A plurality of support rods (106) are arranged on the support frame (101), mounting grooves (107) are formed in the support rods (106), a plurality of sliding rails (108) are arranged above the support frame (101), the sliding rails (108) are clamped in the mounting grooves (107) and are connected with the support rods (106); an electric sliding block (109) is slidably arranged on the sliding rail (108), a mounting bracket (110) and an electromagnet (111) are arranged on one side of the electric sliding block (109), the mounting bracket (110) is connected with the electric sliding block (109), the electromagnet (111) is installed in the mounting bracket (110) and is rotatably connected with the mounting bracket (110), a second motor (112) is arranged on one side of the mounting bracket (110), and the shaft end of the second motor (112) is connected with the electromagnet (111); a plurality of magnetic attraction blocks (113) are arranged on both sides of the support frame (201), the plurality of magnetic attraction blocks (113) are arranged longitudinally, and the electromagnet (111) is in contact with one of the magnetic attraction blocks (113). The drilling assembly further comprises a drilling sleeve (304), a drilling motor (305) and a drill bit (306), the drilling motor (305) is installed on the drilling frame (301), the drilling frame (301) is provided with a bearing, the drilling sleeve (304) is arranged in the bearing, and the top end of the drilling sleeve (304) is connected with the shaft end of the drilling motor (305); the drill bit (306) is located below the drilling sleeve (304), the top of the drill bit (306) is provided with a connecting pipe (307), the connecting pipe (307) is sleeved on the drilling sleeve (304), the drilling sleeve (304) is provided with a connecting stud (308) on both sides, a plurality of connecting sliding grooves (601) are formed in the drilling sleeve (304), the connecting stud (308) is arranged in the connecting sliding groove (601), and the drill bit (306) and the drilling sleeve (304) are slidably connected; a plurality of connecting grooves (309) are formed in the connecting pipe (307), and the connecting grooves (309) and the connecting sliding grooves (601) are through.

2. The core sampling device for use in the arch method of testing the strength of concrete according to claim 1, characterized in that: A sliding piece (310) is arranged between the drilling frame (301) and the drill bit (306), a plurality of bearings are arranged in the sliding piece (310), the sliding piece (310) is sleeved on the drilling sleeve (304) through the plurality of bearings, and the bottom of the sliding piece (310) is in contact with the connecting pipe (307); the bottom of the drilling frame (301) is provided with a mounting clamping groove (311), the force sensor (303) is mounted in the mounting clamping groove (311), one end of the sliding piece (310) is provided with an extrusion plate (312), the extrusion plate (312) is provided with a protrusion, and the protrusion can be in contact with the force sensor (303); one end of the drill bit (306) is provided in a sawtooth shape, the top of the drill bit (306) is provided with an annular converging groove (313), a plurality of guide grooves (314) are formed in the circumferential side of the drill bit (306), the guide grooves (314) penetrate through the top and the bottom of the drill bit (306), and the annular converging groove (313) and the guide grooves (314) are through.

3. The core sampling device for use in the arch method of testing concrete strength according to claim 2, wherein: The push rod (315) is provided below the drilling frame (301), the bottom of the push rod (315) is provided with a push plate (316), the drilling sleeve (304) and the drill bit (306) are through, the push rod (315) is arranged in the drilling sleeve (304), and the push plate (316) is located in the drill bit (306); The positioning hole (317) is formed in the push rod (315), the positioning sliding groove (318) is formed in the drilling sleeve (304) corresponding to the positioning hole (317), the positioning member (319) is arranged in the positioning sliding groove (318) and the positioning hole (317), and the push rod (315) and the drilling sleeve (304) are slidably connected; The fixing stud (320) is arranged on both sides of the drilling sleeve (304), the fixing ring (321) is arranged on both sides of the drilling sleeve (304), the fixing ring (321) is arranged on the fixing stud (320) and the positioning member (319), and the fixing ring (321) is located between the fixing valve (322) and the drilling sleeve (304).

4. The core sampling device for use in the arch method of testing concrete strength according to claim 3, wherein: The spraying assembly comprises a water storage tank (401) and a plurality of spray heads (402), the support frame (101) is provided with a detachable mounting plate (403) above, the water storage tank (401) is mounted on the mounting plate (403), a plurality of spray heads (402) are mounted at the bottom of the drilling frame (301) and are symmetrically distributed on both sides of the drilling sleeve (304); The water pump (404) is arranged on the mounting plate (403), and the water pump (404) is connected with the water storage tank (401) and a plurality of spray heads (402) through connecting pipes; The protective cover (405) is arranged between the support frame (201) and between the two linear laser positioners (203), the protective cover (405) is funnel-shaped, and the drill bit (306) can be arranged in the protective cover (405); The protective cover (405) is made of transparent material, and the protective cover (405) is provided with a through groove (406) corresponding to the linear laser positioner (203); The collecting block (407) is arranged on one side of the protective cover (405), the collecting groove (408) is formed in the collecting block (407), and the opening of the collecting groove (408) faces the inside of the protective cover (405).

5. The core sampling device for use in the arch method of testing the strength of concrete as claimed in claim 1, wherein: The bottom of the support frame (101) is provided with a plurality of groups of moving wheels and a plurality of groups of universal wheels, both sides of the support frame (101) are provided with a plurality of groups of fixing plates (114), the fixing plates (114) are provided with fixing threaded sleeves (115), the top of the support frame (101) is provided with a plurality of groups of fixing bolts (501), the fixing bolts (501) are provided with rubber blocks (502) penetrating through the fixing plates (114), and the rubber blocks (502) can contact the ground; one side of the support frame (101) is provided with a storage box (503), and the storage box (503) is provided with a plurality of groups of lifting assemblies and a plurality of groups of storage tanks (504) inside, and the storage tanks (504) are installed on the lifting assemblies.

6. The core sampling device for use in the arch method of testing concrete strength according to claim 1, wherein: The bottom of the support frame (101) is provided with a plurality of groups of moving wheels and a plurality of groups of universal wheels, both sides of the support frame (101) are provided with a plurality of groups of fixing plates (114), the top of the support frame (101) is provided with a plurality of groups of electric cylinders (505), the electric cylinders (505) are installed on the fixing plates (114), the shaft ends of the electric cylinders (505) are provided with rubber blocks (502) penetrating through the fixing plates (114), and the rubber blocks (502) can contact the ground; both sides of the support frame (101) are provided with fixing frames (506), rotatable fixed supports (507) are arranged between the fixing frames (506), one side of the fixing frame (506) is provided with a rotating motor (508), and the shaft end of the rotating motor (508) is connected with the fixed support (507); one side of the support frame (101) is provided with a storage box (503), and the storage box (503) is provided with a plurality of groups of lifting assemblies and a plurality of groups of storage tanks (504) inside, and the storage tanks (504) are installed on the lifting assemblies.

7. A method of core sampling using the core sampling device for testing the strength of concrete by the arc surface pressure method according to any one of claims 1 to 6, characterized by: The steps include the following steps: Step one: device preparation and positioning; The core drilling sampling device is moved to the detection site, according to the actual situation on site, a plurality of groups of moving wheels and universal wheels at the bottom of the support frame (101) are adjusted, two groups of linear laser positioners (203) are started, the laser beams of the two groups of linear laser positioners (203) intersect to form a cross mark, the cross mark is aligned with the position where the core drilling sampling is needed, and preliminary positioning is completed; meanwhile, the fixing threaded sleeves (115) and the fixing bolts (501) on the fixing plates (114) on both sides of the support frame (101) are used, the fixing bolts (501) are rotated to make the rubber blocks (502) contact and fix the device with the ground; Step two: selection of drilling direction; According to the need to select the ground or wall surface sampling, start the first motor (104), the first motor (104) shaft end drive support frame (201) between the two groups of installation disc (102) rotation, adjust the angle of the support frame (201), make the drilling assembly align the positioning point; When the ground sampling, the support frame (201) is perpendicular to the support frame (101), the drilling assembly is towards the ground, when the wall sampling, the support frame (201) is parallel to the support frame (101), the drilling assembly is towards the wall; At the same time, move the whole equipment, the support frame (201) bottom contact with the wall, the support frame (201) bottom two groups of pressure sensor (105) force, data transmission to the controller (205), ensure the accuracy of the equipment and the wall position; At the same time, according to the need, the use of electromagnet (111) and magnetic block (113) cooperation further fixed the support frame (201); Start the electric sliding block (109), make it slide on the slide rail (108) to one of the magnetic block (113), the electromagnet (111) in the mounting frame (110) is driven by the second motor (112) to rotate, contact and adsorb with one of the magnetic block (113) arranged longitudinally on both sides of the support frame (201), enhance the stability of the support frame (201); Step three: drilling assembly adjustment; Start two groups of the lifting assembly, drive the drilling frame (301) to slide on the support frame (201) through the lifting assembly, adjust the height of the drilling frame (301), make the drill bit (306) close to the concrete detection part; Positioning sensor (202) detects the position of the positioning plate (302) on the drilling frame (301), ensure the position accuracy of the drilling frame (301), and prepare for subsequent drilling; Step four: core sampling; Start the drilling motor (305), the drilling motor (305) drives the drilling sleeve (304) to rotate, the drilling sleeve (304) in turn drives the drill bit (306) to rotate at high speed; Start the spraying assembly, the water in the water tank (401) is transported to the multiple groups of nozzles (402) symmetrically distributed at the bottom of the drilling frame (301) through the connecting conduit under the action of the water pump (404), and the drill bit (306) and the drilling part are sprayed and cooled; In the drilling process, the force sensor (303) monitors the force received by the drill bit (306) in real time, and transmits the data to the controller (205); The controller (205) adjusts the rotating speed of the drilling motor (305) and the lifting speed of the lifting assembly according to the change of the force, to ensure the smooth progress of the drilling process; When the drill bit (306) reaches the predetermined depth, stop the drilling motor (305) and the lifting assembly; Step five: core sample extraction; Screw off the fixed valve (322) of the fixed stud (320) one end, remove the fixed ring (321), push down the positioning member (319), so that the push rod (315) is freely slidable in the drilling sleeve (304), push the push rod (315), and the push plate (316) at the bottom of the push rod (315) pushes the core sample in the drill hole out of the drill bit (306); the removed core sample is temporarily placed in the storage tank (504) for subsequent arc surface compression method for detecting concrete strength test.

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