Core drilling and sampling equipment and method applied to cambered surface counter-pressing method for detecting concrete strength

Abstract

The invention provides core drilling and sampling equipment and method applied to detecting concrete strength through a cambered surface counter-pressing method, and belongs to the technical field of building detection.The core drilling and sampling equipment comprises a supporting frame and a supporting framework, a drilling assembly and two lifting assemblies are arranged on the supporting framework, and a drilling frame in the drilling assembly is slidably connected with the supporting framework through the lifting assemblies; a positioning sensor and two groups of linear laser positioners are arranged on the supporting frame, laser beams of the two groups of linear laser positioners are crossed to form a cross mark, and a positioning plate is arranged on the drilling frame; a force sensor is arranged above the supporting frame, installed at the bottom of the drilling frame and makes contact with the drilling assembly. A spraying assembly is arranged above the supporting frame, and a laser measuring instrument and a controller are further installed on the supporting frame. According to the equipment, the force sensor is installed on the drilling frame, the force borne by the drill bit can be monitored in real time through the force sensor, and meanwhile, the positioning sensor is used in cooperation, so that an operator can conduct adjustment in time when accidents happen in the drilling process.

Description

Technical Field

[0001] The invention belongs to the technical field of building detection, and more specifically, particularly relates to a core drilling sampling device and method for detecting concrete strength using an arc surface compression method. Background Art

[0002] The arc surface compression test is a concrete strength test method. By drilling an arc surface compression specimen on the concrete component and placing it in the test space of the concrete compressive strength arc surface tester, a series of test operations are performed to effectively detect the actual compressive resistance of the concrete. In order to ensure the quality and accuracy of the drilled arc surface compression specimen, core sampling equipment is required.

[0003] Core sampling equipment is used to perform drilling operations on concrete components, effectively ensuring that the surface of the drilled specimen is flat and smooth, avoiding defects such as cracks and gaps, and ensuring the integrity of the specimen; however, traditional core sampling equipment usually only has a simple drilling function, but cannot display various drilling parameters in real time during the drilling process. When faced with concrete of different strength grades, operators are unable to adjust the drilling strategy in time according to actual conditions, which can easily lead to deviations in the sampling position and reduce the accuracy of sampling. The core samples taken out may have defects such as uneven surfaces and internal cracks; at the same time, it is also easy to cause excessive wear of the drill bit, increasing equipment loss and replacement costs. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a core drilling sampling device and method for detecting concrete strength by arc surface pressure method, so as to solve the technical problems in the prior art that traditional core drilling sampling equipment cannot display various parameters in the drilling process in real time, cannot be adjusted in time under different situations, is prone to sampling position deviation, and is also prone to cause wear of the drill bit.

[0005] The purpose and effect of the core drilling sampling device and method for detecting concrete strength by arc surface compression method of the present invention are achieved by the following specific technical means: The core drilling sampling equipment used for detecting concrete strength by arc surface pressure method comprises a support frame and a support frame, wherein the support frame is rotatably connected to the support frame, a drilling assembly and two groups of lifting assemblies are arranged on the support frame, the drilling assembly is located between the two groups of lifting assemblies, the drilling assembly comprises a drilling frame, and the drilling frame is slidably connected to the support frame through the two groups of lifting assemblies; a positioning sensor and two groups of straight laser locators are arranged on the support frame, the laser beams of the two groups of straight laser locators intersect to form a cross mark, and the drilling frame is provided with a positioning plate 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 contacts with the drilling assembly; a spray assembly is arranged above the support frame, and a laser measuring instrument and a controller are also installed on the support frame.

[0006] According to a preferred embodiment, two groups of mounting disks are arranged on the support frame, the support frame is installed between the two groups of mounting disks and is rotatably connected to the mounting disks, a plurality of groups of limit plates are arranged on one side of the mounting disks, the support frame is located between the plurality of groups of limit plates and is in contact with one group of limit plates; a first motor is arranged on one side of one group of mounting disks, the shaft end of the first motor is connected to the support frame, two groups of pressure sensors are arranged at the bottom of the support frame, and the two groups of pressure sensors are symmetrically distributed.

[0007] According to a preferred embodiment, a plurality of groups of support rods are arranged on the support frame, and mounting grooves are opened on the support rods, and a plurality of groups of slide rails are arranged above the support frame, and the slide rails are clamped in the mounting grooves and connected to the support rods; an electric slider is slidably arranged on the slide rail, a mounting frame and an electromagnet are arranged on one side of the electric slider, the mounting frame is connected to the electric slider, the electromagnet is installed in the mounting frame and rotatably connected to 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 to the electromagnet; a plurality of groups of magnetic blocks are arranged on both sides of the support frame, and the plurality of groups of magnetic blocks are arranged longitudinally, and the electromagnet contacts with one group of the magnetic blocks.

[0008] According to a preferred embodiment, the drilling assembly also includes a drilling sleeve, a drilling motor and a drill bit, the drilling motor is installed on the drilling frame, a bearing is provided on the drilling frame, the drilling sleeve is inserted into the bearing, and the top end is connected to the shaft end of the drilling motor; the drill bit is located below the drilling sleeve, a connecting pipe is provided on the top of the drill bit, the connecting pipe is sleeved on the drilling sleeve, connecting studs are provided on both sides of the drilling sleeve, a plurality of groups of connecting grooves are provided on the drilling sleeve, the connecting studs are inserted into the connecting grooves, and the drill bit and the drilling sleeve are slidably connected; a plurality of groups of connecting grooves are also provided on the connecting pipe, and the connecting grooves are connected to the connecting grooves.

[0009] According to a preferred embodiment, a sliding member is provided between the drilling frame and the drill bit, a plurality of groups of bearings are provided in the sliding member, the sliding member is sleeved on the drilling sleeve through the plurality of groups of bearings, and the bottom of the sliding member is in contact with the connecting pipe; a mounting slot is provided at the bottom of the drilling frame, the force sensor is installed in the mounting slot, an extrusion plate is provided at one end of the sliding member, a protrusion is provided on the extrusion plate, and the protrusion can contact with the force sensor; one end of the drill bit is set to be serrated, an annular confluence groove is provided at the top of the drill bit, a plurality of groups of guide grooves are provided on the peripheral side of the drill bit, the guide groove passes through the top and bottom of the drill bit, and the annular confluence groove is connected to the guide groove.

[0010] According to a preferred embodiment, a push rod is provided under the drilling frame, a push plate is provided at the bottom of the push rod, the drilling sleeve and the drill bit are connected, the push rod is inserted in the drilling sleeve, and the push plate is located in the drill bit; a positioning hole is provided on the push rod, and a positioning groove is provided in the drilling sleeve corresponding to the positioning hole, a positioning piece is inserted in the positioning groove and the positioning hole, and the push rod is slidably connected with the drilling sleeve; fixing studs are provided on both sides of the drilling sleeve, and fixing rings are provided on both sides of the drilling sleeve, and the fixing rings are sleeved on the fixing studs and the positioning piece; a fixing valve is also sleeved on one end of the fixing stud, and the fixing ring is located between the fixing valve and the drilling sleeve.

[0011] According to a preferred embodiment, the spray assembly includes a water tank and multiple groups of nozzles, a detachable mounting plate is arranged above the support frame, the water tank is mounted on the mounting plate, and multiple groups of nozzles are mounted on the bottom of the drilling frame, located on both sides of the drilling sleeve, and symmetrically distributed; a water pump is arranged on the mounting plate, and the water pump is respectively connected to the water tank and multiple groups of nozzles through connecting conduits; a protective cover is arranged between the support frames and is located between two groups of the one-line laser locators, the protective cover is arranged in a funnel shape, and the drill bit can be inserted into the protective cover; the protective cover is made of transparent material, and a through groove is opened in the protective cover corresponding to the one-line laser locator; a collecting block is arranged on one side of the protective cover, and a collecting groove is opened on the collecting block, and the opening of the collecting groove faces the inside of the protective cover.

[0012] According to a preferred embodiment, a plurality of groups of movable wheels and a plurality of groups of universal wheels are arranged at the bottom of the support frame, a plurality of groups of fixed plates are arranged on both sides of the support frame, a fixed threaded sleeve is arranged on the fixed plate, a plurality of groups of fixing bolts are arranged above the support frame, the fixing bolts pass through the fixing plates and are provided with rubber blocks, and the rubber blocks can contact the ground; a reserve box is arranged on one side of the support frame, a plurality of groups of lifting assemblies and a plurality of groups of storage tanks are arranged in the reserve box, and the storage tanks are installed on the lifting assemblies.

[0013] According to a preferred embodiment, a plurality of groups of movable wheels and a plurality of groups of universal wheels are arranged at the bottom of the support frame, a plurality of groups of fixed plates are arranged on both sides of the support frame, a plurality of groups of electric cylinders are arranged above the support frame, the electric cylinders are mounted on the fixed plates, the shaft ends of the electric cylinders pass through the fixed plates and are provided with rubber blocks, and the rubber blocks can contact the ground; fixed frames are arranged on both sides of the support frame, a rotatable fixed bracket is arranged between the fixed frames, a rotating motor is arranged on one side of the fixed frame, and the shaft end of the rotating motor is connected to the fixed bracket; a reserve box is arranged on one side of the support frame, a plurality of groups of lifting assemblies and a plurality of groups of storage tanks are arranged in the reserve box, and the storage tanks are mounted on the lifting assemblies.

[0014] A core sampling method, using the above-mentioned core sampling equipment for arc surface pressure method to detect concrete strength, includes the following steps: Step 1: Equipment preparation and positioning; Move the core sampling equipment to the inspection site, and according to the actual situation on site, start two sets of one-line laser locators by adjusting the multiple sets of moving wheels and universal wheels at the bottom of the support frame. The laser beams of the two sets of one-line laser locators intersect to form a cross mark, and align the cross mark with the position where the core sampling is required to complete the preliminary positioning; at the same time, use the fixed threaded sleeves and fixing bolts on the fixing plates on both sides of the support frame, and rotate the fixing bolts to make the rubber block contact the ground to fix the equipment; Step 2: Selection of drilling direction; Select sampling of the ground or wall as needed, start the first motor, the shaft end of the first motor drives the support frame to rotate between the two sets of mounting plates, adjust the angle of the support frame, and align the drilling assembly with the positioning point; when sampling the ground, the support frame is perpendicular to the support frame, and the drilling assembly faces the ground; when sampling the wall, the support frame is parallel to the support frame, and the drilling assembly faces the wall; at the same time, move the entire device, the bottom of the support frame contacts the wall, the two sets of pressure sensors at the bottom of the support frame are stressed, and the data are transmitted to the controller to ensure the accuracy of the position of the device and the wall; At the same time, according to needs, the support frame is further fixed by using the cooperation of the electromagnet and the magnetic block; the electric slider is started to slide on the slide rail to one group of the magnetic blocks, and the electromagnet in the mounting frame rotates under the drive of the second motor, and contacts and adsorbs one group of the magnetic blocks arranged longitudinally on both sides of the support frame, thereby enhancing the stability of the support frame; Step 3: Drill component adjustment; The two sets of lifting components are started, and the drilling frame is driven to slide on the support frame through the lifting components, and the height of the drilling frame is adjusted so that the drill bit is close to the concrete detection part; the positioning sensor detects the position of the positioning plate on the drilling frame to ensure that the position of the drilling frame is accurate, so as to prepare for subsequent drilling; Step 4: Core sampling Start the drilling motor, the drilling motor drives the drilling sleeve to rotate, and 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 through the connecting conduit under the action of the water pump, and the drill bit and the drilling part are sprayed for cooling and slag removal; during the drilling process, the force sensor monitors the force applied to the drill bit in real time and transmits the data to the controller, and the controller adjusts the speed of the drilling motor and the lifting speed of the lifting assembly according to the change of the force to ensure the smooth progress of the drilling process, and stops the drilling motor and the lifting assembly when the drill bit reaches the predetermined depth; Step 5: Take out the core sample; Unscrew the fixing valve at one end of the fixing stud, remove the fixing ring, push the positioning piece downward to allow the push rod to slide freely in the drilling sleeve, push the push rod, and the push plate at the bottom of the push rod pushes the core sample in the drill hole out of the drill bit; temporarily place the taken out core sample in a storage tank for subsequent arc surface compression method concrete strength test.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. A force sensor is installed at the bottom of the drilling frame, which is in contact with the drilling assembly. During the drilling process, it can monitor the force applied to the drill bit in real time and transmit the data to the controller. At the same time, a positioning sensor is set 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 relevant data of the drill bit can be obtained in real time. According to the change of force and drilling depth and other information, the speed of the drilling motor and the lifting speed of the lifting assembly can be adjusted. For example, when the force sensor detects that the force applied to the drill bit is abnormally increased, it may encounter hard foreign objects or drilling angle deviation, the controller will reduce the speed of the drilling motor to facilitate the operator to handle it in time, thereby avoiding the sampling position offset and excessive wear of the drill bit due to the inability to adjust the parameters in time.

[0016] 2. Two groups of straight laser locators are arranged on the support frame. The laser beams of the two groups of straight laser locators cross to form a cross mark, which can accurately align the position where the core sampling is required, and provide an accurate positioning reference for subsequent drilling; at the same time, a laser measuring instrument is also installed on the support frame. The laser measuring instrument and the support frame are rotatably connected, which can effectively measure the distance between the equipment and the surrounding walls or objects, so as to obtain the accurate position of the setting; the water in the water tank in the spray assembly is transported to the multiple groups of nozzles symmetrically distributed at the bottom of the drilling frame through the connecting conduit under the action of the water pump, The drill bit and the drilling part are sprayed for cooling and slag removal to ensure that the drill bit works at an appropriate temperature, extend its service life, and prevent the accumulation of drill cuttings from affecting the drilling quality; at the same time, the setting of the annular confluence groove and the guide groove on the drill bit allows the water flow gathered in the annular confluence groove to quickly flow to the bottom of the drill bit through multiple sets of guide grooves. The design of the guide groove running through the top and bottom of the drill bit ensures that the water flow can flow smoothly along the entire length of the drill bit, and evenly distributes these water flows in the circumferential direction of the top of the drill bit, so that the water flow can cover the drill bit more comprehensively and improve the cooling effect. The funnel-shaped and transparent protective cover set between the support frames can prevent debris from splashing during drilling and ensure the safety of operators. On the other hand, it corresponds to the through groove opened by the one-word laser locator, which does not affect the positioning operation, and the collection block and collection groove set on one side can effectively collect drill cuttings and wastewater, keep the working environment clean, and ensure that the core sampling work is carried out safely and with high quality.

[0017] 3. Multiple sets of moving wheels and universal wheels are set at the bottom of the support frame to facilitate the quick movement of the equipment to the designated detection position. When fixing the equipment, use the fixed threaded sleeves and fixing bolts on the fixing plates on both sides of the support frame, rotate the fixing bolts to make the rubber blocks contact the ground, and the equipment can be firmly fixed. When adjusting the drilling direction, start the first motor, and its shaft end drives the support frame to rotate between the two sets of mounting disks. The angle of the support frame can be easily adjusted to meet the sampling requirements of different locations such as the ground or wall. In addition, by sliding the electric slider on the slide rail, the electromagnet in the mounting frame is driven to contact and adsorb the magnetic blocks on both sides of the support frame, further enhancing the stability of the support frame. The entire operation process is simple and convenient, which improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the structure of the first embodiment of the present invention after assembly; Figure 2 It is a schematic diagram of the structure after the disassembly of the first embodiment of the present invention; Figure 3 It is a schematic diagram of the structure of the spray assembly after being disassembled according to the present invention; Figure 4 is a schematic diagram of the structure after the splitting of the second embodiment of the present invention; Figure 5 It is a schematic diagram of the structure of the drilling assembly after being disassembled; Figure 6 It is a schematic diagram of the structure of the push rod; Figure 7 is a schematic diagram of the structure of the sliding member; Figure 8 It is a structural schematic diagram of the drilling frame; Fig. 9 yes Figure 5 A partial enlarged view of area a in the middle; Fig.10 yes Figure 5 A partial enlarged view of area b; Fig.11 It is a schematic diagram of the structure of the protective cover; Fig.12 is a flow chart of the steps of a core sampling method; Fig.13 This is the principle block diagram of the controller.

[0019] In the figure, the corresponding relationship between the component names and the figure numbers is as follows: 101, support frame; 102, mounting plate; 103, limit plate; 104, first motor; 105, pressure sensor; 106, support rod; 107, mounting slot; 108, slide rail; 109, electric slider; 110, mounting frame; 111, electromagnet; 112, second motor; 113, magnetic block; 114, fixing plate; 115, fixed threaded sleeve; 201, support frame; 202, positioning sensor; 203, one-line laser locator; 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 part; 311, mounting slot; 312, extrusion plate; 313, annular confluence groove; 314, guide groove; 315, push rod; 316, push plate; 317, positioning hole; 318, positioning slide groove; 319, positioning part; 320, fixing stud; 321, fixing ring; 322, fixing valve; 401, water storage tank; 402, nozzle; 403, mounting plate; 404, water pump; 405, protective cover; 406, through groove; 407, collecting block; 408, collecting groove; 501, fixing bolt; 502, rubber block; 503, reserve box; 504, storage tank; 505, electric cylinder; 506, fixing bracket; 507, fixing bracket; 508, rotating motor; 601, connecting slide groove. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the technical solutions of the present invention, but cannot be used to limit the protection scope of the present invention.

[0021] Embodiment 1: like Figures 1 to 13As shown, the present invention provides a core sampling device for detecting concrete strength by arc surface pressure method, including a support frame 101 and a support frame 201. The support frame 101 is the basic structure of the entire core sampling device and plays a bearing role; the support frame 201 is rotatably connected to the support frame 101, so that the support frame 201 can adjust the angle within a certain range to adapt to different construction scenes and sampling requirements, and can perform sampling operations on ground concrete or wall concrete. A drilling component and two sets of lifting components are arranged on the support frame 201. The drilling component is located between the two sets of lifting components. They work together to provide necessary conditions for the drilling operation. During the core sampling process, the two sets of lifting components can control the movement of the drilling component in the vertical direction. When the drilling operation needs to be started, the drilling component can be steadily lowered to a suitable height by operating the lifting component to make it close to the concrete surface to be drilled. During the drilling process, if there are drilling requirements of different depths, the lifting component can adjust the height of the drilling component at any time according to the corresponding instructions to ensure that the drilling work can proceed smoothly. At the same time, the drilling assembly can pause and continue the drilling operation at different positions with the cooperation of the lifting assembly, ensuring that during drilling, samples can be taken for concrete structures of different depths and strengths. The drilling frame 301 in the drilling assembly is slidably connected to the support frame 201 through two sets of lifting assemblies. In 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 heights to meet the core sampling requirements of concrete at different heights. The support frame 201 is provided with a positioning sensor 202 and two sets of one-line laser locators 203. The positioning sensor 202 can sense the position information of the drilling frame 301 and provide position data basis for subsequent operations. The positioning sensor 202 can adopt the Omron E2E-X10Y1-M1J positioning sensor. The laser beams emitted by the two groups of straight laser locators 203 cross each other to form a cross mark. This 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 straight laser locator 203 can adopt the Raycon LRS-3030-660-30G laser locator. The drilling frame 301 is provided with a positioning plate 302 corresponding to the positioning sensor 202. The positioning plate 302 cooperates with the positioning sensor 202 to help realize the 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. For example, when the drill bit 306 drills concrete, it can measure the magnitude of the force applied to the drill bit 306 and transmit these data to the controller 205. A spray assembly is also provided above the support frame 101, and the spray assembly plays an important role in the drilling process. It can provide necessary auxiliary functions such as cooling and slag removal for the drilling operation.At the same time, 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, etc., and provide reference information for operators. The laser measuring instrument 204 can adopt a Leica DISTO D2 laser measuring instrument; and the controller 205 is used to control and coordinate various operations of the entire equipment to ensure the orderly operation of the equipment. The controller 205 can adopt a Delta DVP-40ES2 controller.

[0022] like Figure 1 , Figure 2 As shown, the support frame 101 is the key support structure of the entire core sampling equipment and plays the role of stabilizing the equipment. Two groups of mounting plates 102 are arranged above it, and the two groups of mounting plates 102 stabilize the support frame 201 between them. The support frame 201 and the mounting plate 102 are rotatably connected, so that the support frame 201 can be adjusted in angle to achieve the conversion between wall concrete or ground concrete. Multiple groups of limit plates 103 are distributed on one side of the mounting plate 102. These limit plates 103 are neatly arranged to limit the rotation range of the support frame 201. The support frame 201 is between the multiple groups of limit plates 103 and contacts one of the groups of limit plates 103. When the support frame 201 is rotating, the limit plates 103 can effectively prevent it from excessive rotation, ensuring the stability of the equipment operation. A first motor 104 is installed on one side of one of the mounting plates 102. The shaft end 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 drives the support frame 201 to rotate smoothly between the two mounting plates 102, thereby meeting the needs of core sampling at different angles. Two groups of pressure sensors 105 are also arranged at the bottom of the support frame 201, which are symmetrically distributed below the support frame 201.

[0023] When the device is working, the pressure sensor 105 can monitor the pressure changes at the bottom of the support frame 201 in real time, and provide data reference for the operating status of the device. When sampling the wall concrete, the support frame 201 contacts the wall, and the pressure sensor 105 at the bottom is under pressure, which can effectively detect the pressure distribution between the device and the wall. By analyzing the data collected by the pressure sensor 105, it is possible to determine whether the device is stably attached to the wall to avoid 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 the drilling process on the contact state between the device and the wall. If the pressure fluctuates abnormally during the drilling process, it may mean that the vibration caused by the drilling operation is too large, and the drilling parameters need to be adjusted to reduce vibration and ensure stable contact between the device and the wall. Moreover, the data of the pressure sensor 105 can help the operator evaluate the bearing capacity of the wall and ensure that the drilling operation will not cause additional damage to the wall structure. It also provides important basic information for subsequent data processing and result analysis, ensuring that the entire core sampling process is carried out more safely and efficiently, and improving the quality and reliability of core sampling of wall concrete. The pressure sensor 105 can use the Honeywell SLPX001ND1A3 pressure sensor.

[0024] These mounting grooves 107 provide mounting positions for multiple sets of slide rails 108, and the slide rails 108 are clamped in the mounting grooves 107, so as to be firmly connected with the support rods 106. On the slide rails 108, an electric slider 109 is slidably arranged, and the electric slider 109 is like a mobile platform, sliding freely on the slide rails 108. One side of the electric slider 109 is connected to the mounting frame 110, and an electromagnet 111 is installed in the mounting frame 110, and the electromagnet 111 is rotatably connected to the mounting frame 110. On one side of the mounting frame 110, a second motor 112 is installed, and the shaft end of the second motor 112 is connected to the electromagnet 111. When the angle of the electromagnet 111 needs to be adjusted, the second motor 112 is started, and the electromagnet 111 can be driven to rotate. On both sides of the support frame 201, multiple groups of magnetic blocks 113 are arranged longitudinally. When the electric slider 109 slides to a suitable position, the electromagnet 111 rotates and contacts one group of the magnetic blocks 113. Through magnetic adsorption, the stability of the support frame 201 is further enhanced, providing reliable protection for core drilling sampling.

[0025] like Figures 5 to 10As shown, the drilling assembly also includes 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 a power source for the drilling operation. A bearing is provided on the drilling frame 301, and the drilling sleeve 304 is inserted into the bearing, and the top end of the bearing is connected to the shaft end of the drilling motor 305. When the drilling motor 305 starts to operate, it will drive the drilling sleeve 304 to rotate at a high speed. The drill bit 306 is located below the drilling sleeve 304, and a connecting pipe 307 is provided on the top of the drill bit 306, and the connecting pipe 307 is sleeved on the drilling sleeve 304. Connecting studs 308 are provided on both sides of the drilling sleeve 304. The drilling sleeve 304 is provided with multiple groups of connecting grooves 601. The connecting studs 308 are inserted into the connecting grooves 601. This structure allows the drill bit 306 to be slidably connected to the drilling sleeve 304, so that the drill bit 306 can move within a certain range on the drilling sleeve 304. A connecting groove 309 is provided on the connecting pipe 307. The connecting groove 309 is connected with the connecting groove 601, so that the drill bit 306 can be installed on the drilling sleeve 304, making the connection between the drill bit 306 and the drilling sleeve 304 more stable and convenient, ensuring that the entire drilling assembly can operate normally in the subsequent core sampling operation.

[0026] A sliding member 310 is provided between the drilling frame 301 and the drill bit 306. The sliding member 310 is provided with a plurality of bearings. The sliding member 310 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 contacts the connecting pipe 307. A mounting slot 311 is provided at the bottom of the drilling frame 301. The force sensor 303 is installed in the mounting slot 311. An extrusion plate 312 is provided at one end of the sliding member 310. A protrusion is provided on the extrusion plate 312. During the drilling process, when the drill bit 306 contacts the concrete, the drill bit 306 can move upwards for a certain distance, so that the drill bit 306 can resist the movement of the sliding member 310, so that the extrusion plate 312 on the sliding member 310 contacts the force sensor 303 through the protrusion. The force sensor 303 can sense the force on the drill bit 306 and transmit the data to the control system. One end of the drill bit 306 is set to be serrated. This shape can more effectively cut into the interior of the concrete when drilling concrete, thereby enhancing the drilling ability. An annular confluence groove 313 is provided at the top of the drill bit 306, and multiple groups of guide grooves 314 are provided around the drill bit 306. The guide grooves 314 run through the top and bottom of the drill bit 306, and the annular confluence groove 313 and the guide groove 314 are connected. When the spray assembly is working, water sprayed onto the drill bit 306 will first converge into the annular confluence groove 313, and then flow to the bottom of the drill bit 306 through the guide groove 314, which plays a role in cooling and slag removal for the drill bit 306, ensuring the smooth progress of the drilling work and extending the service life of the drill bit 306.

[0027] A push rod 315 is provided below the drilling frame 301, and a push plate 316 is provided at the bottom of the push rod 315. The drilling sleeve 304 and the drill bit 306 are connected. The push rod 315 is inserted into 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 rod 315 allows the push plate 316 to squeeze the core sample inside the drill bit 306, and squeeze the core sample out of the drill bit 306; at the same time, a plurality of groups of reinforcing ribs are provided on the inner wall of the drilling sleeve 304, and the push rod 315 is provided with a card slot corresponding to the reinforcing rib, and the reinforcing rib is clamped in the card slot, so that the drilling sleeve 304 can maintain good structural stability when it is subjected to the strong force generated by the high-speed rotation of the drill bit 306 driven by the drilling motor 305, so as to avoid deformation or damage. A positioning hole 317 is provided on the push rod 315, and a positioning slot 318 is provided in the drilling sleeve 304 corresponding to the positioning hole 317. The positioning member 319 is inserted into the positioning slot 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 and will not move at will through the cooperation of the positioning member 319 in the positioning slot 318 and the positioning hole 317. When it is necessary to push the core sample, it is only necessary to operate the positioning member 319 to make it break away from the restrictions of the positioning slot 318 and the positioning hole 317, so that the push rod 315 can be pushed to slide in the drilling sleeve 304. Both sides of the drilling sleeve 304 are provided with fixing studs 320, and both sides of the drilling sleeve 304 are also provided with fixing rings 321, and the fixing rings 321 are sleeved on the fixing studs 320 and the positioning member 319. A fixing valve 322 is also sleeved on one end of the fixing stud 320, and a fixing ring 321 is located between the fixing valve 322 and the drilling sleeve 304. When the device is working normally, the fixing valve 322 is tightened on the fixing stud 320, and the fixing ring 321 is fixed on the drilling sleeve 304, thereby ensuring the stability of the positioning member 319 and preventing it from accidentally moving.

[0028] like Figure 2 , Figure 3 , Fig.11As shown, the spray assembly includes a water tank 401 and multiple groups of nozzles 402. A detachable mounting plate 403 is provided above the support frame 101. The water tank 401 is mounted on the mounting plate 403, which is convenient for cleaning, maintenance and replacement of the water tank 401. Multiple groups of nozzles 402 are installed at the bottom of the drilling frame 301, located on both sides of the drilling sleeve 304, and are symmetrically distributed. A water pump 404 is provided on the mounting plate 403, and the water pump 404 is respectively connected to the water tank 401 and the multiple groups of nozzles 402 through connecting conduits. When the drilling operation starts, the water pump 404 is started, and the water in the water tank 401 is transported to the nozzle 402 through the connecting conduit. The water sprayed by the nozzle 402 sprays the drill bit 306 and the drilling site for cooling and slag removal, ensuring the smooth progress of the drilling process. A protective cover 405 is provided between the support frames 201, and is located between the two groups of one-line laser locators 203. The protective cover 405 is arranged in a funnel shape, and the drill bit 306 can be inserted into the protective cover 405. This funnel shape can effectively prevent the debris splashing generated during the drilling process. The protective cover 405 is made of a transparent material, which allows the operator to clearly observe the internal situation when the equipment is working. At the same time, the protective cover 405 is provided with a through groove 406 corresponding to the one-line laser locator 203, which will not affect the positioning function. A collecting block 407 is provided on one side of the protective cover 405, and a collecting groove 408 is provided on the collecting block 407. The collecting groove 408 opens toward the inside of the protective cover 405, and can collect debris and wastewater falling from the protective cover 405 to keep the working environment clean.

[0029] like Figure 2 , Figure 3As shown, multiple groups of moving wheels and multiple groups of universal wheels are arranged at the bottom of the support frame 101, which makes it convenient to transport and transfer the equipment to the work site. The moving wheels can bear the weight of the equipment and provide stable support; multiple groups of fixing plates 114 are arranged on both sides of the support frame 101, and fixed threaded sleeves 115 are arranged on the fixing plates 114. At the same time, multiple groups of fixing bolts 501 are arranged above the support frame 101, and the fixing bolts 501 pass through the fixing plates 114 and are provided with rubber blocks 502 at the ends. When the equipment moves to the designated position, the operator rotates the fixing bolts 501 so that the rubber blocks 502 gradually descend and contact the ground. As the fixing bolts 501 are further tightened, a large friction force is generated between the rubber blocks 502 and the ground, thereby fixing the equipment on the ground, preventing the equipment from being displaced during the core sampling process, and ensuring the stability of the drilling work. A storage box 503 is arranged on one side of the support frame 101. The storage box 503 provides a convenient material storage space for the continuous operation of the equipment. There are multiple groups of lifting components and multiple groups of storage tanks 504 arranged inside the storage box 503. The storage tanks 504 are installed on the lifting components. These storage tanks 504 can be used for drill core samples after drilling. When the items in the storage tanks 504 need to be taken, the lifting components can raise the storage tanks 504 to a suitable height, which is convenient for operators to take, improves work efficiency, and makes the use of the equipment more convenient and orderly; the lifting components include a lifting frame, and 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, so that the lifting height can be controlled by 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. The end of the electric lifting rod in contact with the lifting frame slowly lifts the lifting frame upward, making it easy for the operator to take the core sample; at the same time, multiple groups of identifiable modules are arranged in the storage box 503, and the storage tank 504 is provided with an identification block that can be detected by the identifiable module corresponding to the identifiable module. At the same time, multiple groups of identifiable modules are arranged in the storage box 503, and the storage tank 504 is provided with an identification block that can be detected by the identifiable module corresponding to the identifiable module. When the storage tank 504 is placed on the lifting frame, the identifiable module starts to work, and these identifiable modules can capture the signal sent by the identification block, and then locate and identify the 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 relevant information of the items stored in each storage tank 504 through the controller 205 of the device. The identifiable module can also monitor the status of the storage tank 504 in real time. Once it is found that the position of the storage tank 504 is offset, or the identification block fails and cannot be identified normally, the system will immediately issue an alarm to remind the staff.This not only improves the efficiency of item management, but also ensures the orderliness of the storage of items in the storage box 503, ensures that the core sampling work can proceed smoothly, and reduces the time wasted due to searching for items or equipment failure. The identifiable module can use the common UWB3000 module.

[0030] A core sampling method, using the above-mentioned core sampling equipment for arc surface pressure method to detect concrete strength, includes the following steps: Step 1: Equipment preparation and positioning; The core sampling equipment is moved to the inspection site. According to the actual situation on site, the operator pushes the equipment and uses the multiple sets of moving wheels and universal wheels at the bottom of the support frame 101 to flexibly move on different terrains and successfully arrive at the designated location. After arriving, the two sets of one-line laser locators 203 are started. The laser beams of the two sets of one-line laser locators 203 intersect to form a cross mark. The staff carefully aligns the cross mark with the position where the core sampling is required, thereby completing the preliminary positioning. At the same time, using the fixed threaded sleeve 115 and the fixing bolt 501 on the fixing plates 114 on both sides of the support frame 101, the operator manually rotates the fixing bolt 501. As the fixing bolt 501 rotates, the rubber block 502 gradually descends until it contacts the ground. The friction generated between the rubber block 502 and the ground fixes the equipment firmly to the ground to prevent it from being displaced in subsequent operations. Step 2: Selection of drilling direction; According to the actual detection needs, it is determined whether to select ground or wall sampling; if ground sampling is required, the first motor 104 is started, and the shaft end of the first motor 104 drives the support frame 201 to rotate between the two sets of mounting plates 102, and the angle of the support frame 201 is adjusted so that the drilling component is vertically downwardly aligned with the ground positioning point; if wall sampling is required, 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 component is directed toward the positioning point of the wall; when sampling the wall, the entire device is moved so that the bottom of the support frame 201 contacts the wall. At this time, the two sets of pressure sensors 105 at the bottom of the support frame 201 are stressed, and the pressure data are transmitted to the controller 205 in real time. The operator fine-tunes the position of the device based on these data to ensure that the position of the device and the wall are appropriate; At the same time, according to the actual needs of the site, the support frame 201 is further fixed by the cooperation of the electromagnet 111 and the magnetic block 113; the electric slider 109 is started, and the electric slider 109 slides on the slide rail 108 to one group of magnetic blocks 113, and the electromagnet 111 in the mounting frame 110 is driven by the second motor 112 to rotate, so that it contacts and adsorbs one group of magnetic blocks 113 arranged longitudinally on both sides of the support frame 201, further enhancing the stability of the support frame 201 and preventing shaking during the drilling process; Step 3: Drill component adjustment; The two lifting components are started, and the lifting components start to work, driving 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 instrument 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 that the position of the drilling frame 301 is accurate, so as to make full preparations for the subsequent drilling work; Step 4: Core sampling; The drilling motor 305 is started, and the drilling motor 305 is powered on and operated, driving the drilling sleeve 304 to start rotating, and the drilling sleeve 304 then drives the drill bit 306 to rotate at a high speed; then the spray assembly is started, and 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 pipe under the action of the water pump 404, and the water sprayed by the nozzle 402 is evenly sprinkled on the drill bit 306 and the drilling part, spraying and cooling the drill bit 306, and at the same time, the debris generated by the drilling is washed away, which plays a role in slag removal; during the drilling process, the force sensor 303 monitors the force exerted on the drill bit 306 in real time, and transmits the data to the controller 205. The controller 205 automatically or manually adjusts the speed of the drilling motor 305 and the lifting speed of the lifting assembly according to the change of the force to ensure that the drilling process proceeds smoothly; when the drill bit 306 reaches the predetermined depth, the drilling motor 305 and the lifting assembly are stopped in time to end the drilling operation; Step 5: Take out the core sample; Unscrew the fixing valve 322 at one end of the fixing stud 320, remove the fixing ring 321 from the fixing stud 320 and the positioning piece 319, and then push the positioning piece 319 downward to allow the push rod 315 to slide freely in the drilling sleeve 304; the operator holds the push rod 315 and pushes it slowly, and the push plate 316 at the bottom of the push rod 315 slowly pushes the core sample in the borehole out of the drill bit 306; after taking out the core sample, temporarily place it in the storage tank 504, waiting for subsequent use in the arc surface pressure method to detect the concrete strength test, so as to provide a key sample for accurately evaluating the concrete strength.

[0031] Embodiment 2: Based on the core sampling equipment and method for detecting concrete strength by arc surface compression method provided in the first embodiment of the present application, the second embodiment of the present application proposes a core sampling equipment and method for detecting concrete strength by arc surface compression method. This second embodiment is only a preferred method of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment. The second embodiment of the present invention will be further described below.

[0032] like Figure 3 , Figure 4As 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 equipment convenient to transport and transfer to the work site. The moving wheels can bear the weight of the equipment and provide stable support; multiple sets of fixed plates 114 are arranged on both sides of the support frame 101, and multiple sets 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 passes through the fixed plate 114 and is connected to the rubber block 502. When the equipment reaches the predetermined position, the electric cylinder 505 is started, and the shaft end slowly extends, driving the rubber block 502 to descend until it contacts the ground. As the electric cylinder 505 further extends, sufficient friction is generated between the rubber block 502 and the ground, firmly fixing the equipment to prevent displacement during the core sampling operation. Fixed frames 506 are also arranged on both sides of the support frame 101, and a rotatable fixed bracket 507 is installed between the two fixed frames 506. The rotating motor 508 on one side of the fixed frame 506 has its shaft end connected to the fixed bracket 507. When the angle of the fixed bracket 507 needs to be adjusted, the rotating motor 508 is started, and the motor operation drives the fixed bracket 507 to rotate to meet different support or fixing requirements and provide additional stable support for the equipment. A storage box 503 is arranged on one side of the support frame 101. The storage box 503 provides a convenient material storage space for the continuous operation of the equipment. There are multiple groups of lifting components and multiple groups of storage tanks 504 arranged inside it, and the storage tanks 504 are installed on the lifting components. These storage tanks 504 can be used for drill core samples after drilling. When the items in the storage tanks 504 need to be taken, the lifting components can raise the storage tanks 504 to a suitable height, which is convenient for operators to take, improves work efficiency, and makes the use of the equipment more convenient and orderly; the lifting components include a lifting frame, and 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, so that the lifting height of the lifting can be controlled by 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. The end of the electric lifting rod in contact with the lifting frame slowly lifts the lifting frame upward, making it easy for the operator to take the core sample; at the same time, multiple groups of identifiable modules are arranged in the storage box 503, and the storage tank 504 is provided with an identification block that can be detected by the identifiable module corresponding to the identifiable module. At the same time, multiple groups of identifiable modules are arranged in the storage box 503, and the storage tank 504 is provided with an identification block that can be detected by the identifiable module corresponding to the identifiable module. When the storage tank 504 is placed on the lifting frame, the identifiable module starts to work, and these identifiable modules can capture the signal sent by the identification block, and then locate and identify the 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 relevant information of the items stored in each storage tank 504 through the controller 205 of the device.The identification module can also monitor the status of the storage tank 504 in real time. Once it is found that the position of the storage tank 504 is offset, or the identification block fails and cannot be identified normally, the system will immediately issue an alarm to remind the staff. This not only improves the efficiency of item management, but also ensures the orderliness of the storage of items in the reserve box 503, ensures that the core sampling work can proceed smoothly, and reduces the time wasted due to searching for items or equipment failure.

[0033] The difference between the second embodiment and the first embodiment is that multiple groups of electric cylinders 505 are installed above the fixing plates 114 on both sides of the support frame 101, and the shaft ends of the electric cylinders 505 pass through the fixing plates 114 to connect to 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 to contact the ground and fix the equipment, and automatic fixation can be achieved through the electric cylinders 505; at the same time, fixing frames 506 are added on both sides of the support frame 101, and a rotatable fixing bracket 507 is installed between the two fixing frames 506. A rotating motor 508 is also provided on one side of the fixing frame 506, and the shaft end is connected to the fixing bracket 507. When it is necessary to adjust the angle of the fixing bracket 507, starting the rotating motor 508 can meet different support or fixation requirements and provide additional stable support for the equipment. The remaining conditions are consistent with the first embodiment, so this embodiment will not be repeated.

[0034] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments.

Claims

1. A core sampling device for detecting concrete strength using an arc surface pressure method, comprising a support frame (101) and a support frame (201), characterized in that: The support frame (201) is rotatably connected to the support frame (101); a drilling assembly and two sets of lifting assemblies are arranged on the support frame (201); the drilling assembly is located between the two sets of lifting assemblies; the drilling assembly comprises a drilling frame (301); the drilling frame (301) is slidably connected to the support frame (201) via the two sets of lifting assemblies; a positioning sensor (202) and two sets of one-line laser positioners (203) are arranged on the support frame (201); the two sets of one-line laser positioners (203) are arranged on the support frame (201); The laser beams of the laser locator (203) are crossed 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 provided above the support frame (101), and the force sensor (303) is installed at the bottom of the drilling frame (301) and contacts the drilling assembly; a spray assembly is provided above the support frame (101), and a laser measuring instrument (204) and a controller (205) are also installed on the support frame (101).

2. The core drilling sampling equipment for arc surface compression method for concrete strength testing according to claim 1 is characterized in that: Two groups of mounting plates (102) are arranged on the support frame (101); the support frame (201) is installed between the two groups of mounting plates (102) and is rotatably connected to the mounting plates (102); a plurality of groups of limit plates (103) are arranged on one side of the mounting plates (102); the support frame (201) is located between the plurality of groups of limit plates (103) and is in contact with one group of limit plates (103); a first motor (104) is arranged on one side of one group of mounting plates (102); an axial end of the first motor (104) is connected to the support frame (201); 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.

3. The core drilling sampling equipment for arc surface compression method for concrete strength testing according to claim 2 is characterized in that: The support frame (101) is provided with a plurality of support rods (106), the support rods (106) are provided with mounting grooves (107), and the support frame (101) is provided with a plurality of slide rails (108) above the support frame (101), the slide rails (108) are clamped in the mounting grooves (107) and are connected to the support rods (106); an electric slider (109) is slidably provided on the slide rail (108), a mounting frame (110) and an electromagnet (111) are provided on one side of the electric slider (109), and the mounting frame (110) and the electromagnet (111) are connected to the slide rail (108). The electric slider (109) is connected, the electromagnet (111) is installed in the mounting frame (110) and is rotatably connected to the mounting frame (110), a second motor (112) is arranged on one side of the mounting frame (110), and the shaft end of the second motor (112) is connected to the electromagnet (111); multiple groups of magnetic blocks (113) are arranged on both sides of the support frame (201), and the multiple groups of magnetic blocks (113) are arranged longitudinally, and the electromagnet (111) is in contact with one group of the magnetic blocks (113).

4. The core drilling sampling equipment for arc surface compression method for concrete strength testing according to claim 1 is characterized in that: The drilling assembly further comprises a drilling sleeve (304), a drilling motor (305) and a drill bit (306); the drilling motor (305) is mounted on the drilling frame (301); a bearing is provided on the drilling frame (301); the drilling sleeve (304) is inserted into the bearing and the top end is connected to the shaft end of the drilling motor (305); the drill bit (306) is located below the drilling sleeve (304); a connecting pipe (307) is provided on the top of the drill bit (306); the connecting pipe (307) is sleeved on the drilling sleeve (304), and connecting studs (308) are arranged on both sides of the drilling sleeve (304). The drilling sleeve is provided with multiple groups of connecting grooves (601), and the connecting studs (308) are inserted into the connecting grooves (601). The drill bit (306) and the drilling sleeve (304) are slidably connected; the connecting pipe (307) is also provided with multiple groups of connecting grooves (309), and the connecting grooves (309) are connected with the connecting grooves (601).

5. The core drilling sampling equipment for arc surface compression method for concrete strength testing according to claim 4 is characterized in that: A sliding member (310) is provided between the drilling frame (301) and the drill bit (306), and a plurality of groups of bearings are provided in the sliding member (310). The sliding member (310) is sleeved on the drilling sleeve (304) through the plurality of groups of bearings, and the bottom of the sliding member (310) is in contact with the connecting pipe (307); a mounting slot (311) is provided at the bottom of the drilling frame (301), and the force sensor (303) is installed in the mounting slot (311). 10) An extrusion plate (312) is provided at one end, and a protrusion is provided on the extrusion plate (312), and the protrusion can contact the force sensor (303); one end of the drill bit (306) is configured to be sawtooth-shaped, and an annular flow confluence groove (313) is provided on the top of the drill bit (306), and a plurality of groups of flow guide grooves (314) are provided on the peripheral side of the drill bit (306), and the flow guide grooves (314) penetrate the top and bottom of the drill bit (306), and the annular flow confluence groove (313) and the flow guide groove (314) are connected.

6. The core drilling sampling equipment for arc surface compression method for concrete strength testing according to claim 5 is characterized in that: A push rod (315) is provided below the drilling frame (301), and a push plate (316) is provided at the bottom of the push rod (315); the drilling sleeve (304) and the drill bit (306) are connected, the push rod (315) is inserted into the drilling sleeve (304), and the push plate (316) is located in the drill bit (306); a positioning hole (317) is provided on the push rod (315), and a positioning groove (318) is provided on the drilling sleeve (304) corresponding to the positioning hole (317); a positioning member (319) is inserted into the positioning groove (31 8) in the positioning hole (317), the push rod (315) is slidably connected to the drilling sleeve (304); fixing studs (320) are provided on both sides of the drilling sleeve (304), and fixing rings (321) are provided on both sides of the drilling sleeve (304), and the fixing rings (321) are sleeved on the fixing studs (320) and the positioning member (319); a fixing valve (322) is also sleeved on one end of the fixing stud (320), and the fixing ring (321) is located between the fixing valve (322) and the drilling sleeve (304).

7. The core drilling sampling equipment for arc surface compression method for concrete strength testing according to claim 6 is characterized in that: The spray assembly comprises a water storage tank (401) and a plurality of 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); a plurality of 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; a water pump (404) is arranged on the mounting plate (403); the water pump (404) is connected to the water storage tank (401) and the plurality of groups of spray heads (402) respectively through connecting conduits; the support frame (20 1), and is located between the two groups of the one-line laser locators (203); the protective cover (405) is arranged in a funnel shape, and the drill bit (306) can be inserted into the protective cover (405); the protective cover (405) is made of a transparent material, and the protective cover (405) is provided with a through groove (406) corresponding to the one-line laser locator (203); a collecting block (407) is arranged on one side of the protective cover (405), and a collecting groove (408) is opened on the collecting block (407), and the collecting groove (408) opens toward the inside of the protective cover (405).

8. The core drilling sampling equipment for arc surface compression method for concrete strength testing according to claim 1 is characterized in that: 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) pass through the fixing plates (114) and are provided with rubber blocks (502); the rubber blocks (502) can contact the ground; a storage box (503) is provided on one side of the support frame (101); the storage box (503) is provided with a plurality of groups of lifting assemblies and a plurality of groups of storage tanks (504); the storage tanks (504) are installed on the lifting assemblies.

9. The core drilling sampling equipment for arc surface compression method for concrete strength testing according to claim 1 is characterized in that: 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 mounted on the fixing plates (114). The shaft ends of the electric cylinders (505) pass through the fixing plates (114) and are provided with rubber blocks (502). The rubber blocks (502) can contact the ground. Both sides of the support frame (101) are provided with a plurality of fixing plates (114). A fixed frame (506) is provided, a rotatable fixed bracket (507) is provided between the 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 bracket (507); a storage box (503) is provided on one side of the support frame (101), and a plurality of lifting components and a plurality of storage tanks (504) are provided in the storage box (503), and the storage tanks (504) are installed on the lifting components.

10. A core sampling method, using the core sampling device for arc surface compression method for testing concrete strength as claimed in any one of claims 1 to 9, characterized in that: The following steps are included: Step 1: Equipment preparation and positioning; The core sampling device is moved to the inspection site. According to the actual situation at the site, the multiple groups of moving wheels and universal wheels at the bottom of the support frame (101) are adjusted to start the two groups of straight laser positioners (203). The laser beams of the two groups of straight laser positioners (203) are crossed to form a cross mark. The cross mark is aligned with the position where the core sampling is required to complete the preliminary positioning. At the same time, the fixed threaded sleeves (115) and the fixing bolts (501) on the fixing plates (114) at both sides of the support frame (101) are used to rotate the fixing bolts (501) so that the rubber block (502) contacts the ground to fix the device; Step 2: Selection of drilling direction; Select sampling of the ground or the wall as required, start the first motor (104), the shaft end of the first motor (104) drives the support frame (201) to rotate between the two sets of mounting plates (102), adjust the angle of the support frame (201), and align the drilling assembly with the positioning point; when sampling the ground, the support frame (201) is perpendicular to the support frame (101), and the drilling assembly faces the ground; when sampling the wall, the support frame (201) is parallel to the support frame (101), and the drilling assembly faces the wall; at the same time, move the entire device, the bottom of the support frame (201) contacts the wall, the two sets of pressure sensors (105) at the bottom of the support frame (201) are subjected to force, and the data is transmitted to the controller (205), so as to ensure the accuracy of the position of the device and the wall; At the same time, as required, the support frame (201) is further fixed by using the cooperation of the electromagnet (111) and the magnetic attraction block (113); the electric slider (109) is started to slide on the slide rail (108) to one group of the magnetic attraction blocks (113); the electromagnet (111) in the mounting frame (110) is driven by the second motor (112) to rotate, and contacts and adsorbs one group of the magnetic attraction blocks (113) arranged longitudinally on both sides of the support frame (201), thereby enhancing the stability of the support frame (201); Step 3: Drill component adjustment; The two sets of lifting components are started, and the drilling frame (301) is driven to slide on the supporting frame (201) by the lifting components, and the height of the drilling frame (301) is adjusted so that the drill bit (306) is close to the concrete detection part; the positioning sensor (202) detects the position of the positioning plate (302) on the drilling frame (301) to ensure that the position of the drilling frame (301) is accurate, so as to prepare for subsequent drilling; Step 4: Drilling and sampling; The drilling motor (305) is started, and the drilling motor (305) drives the drilling sleeve (304) to rotate, and the drilling sleeve (304) further drives the drill bit (306) to rotate at a high speed; the spray assembly is started, and the water in the water storage tank (401) is transported to the multiple groups of spray heads (402) symmetrically distributed at the bottom of the drilling frame (301) through the connecting pipe under the action of the water pump (404), so as to spray and cool the drill bit (306) and the drilling part and discharge slag; during the drilling process, the force sensor (303) monitors the force applied to the drill bit (306) in real time, and transmits the data to the controller (205); the controller (205) adjusts the rotation 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 that the drilling process proceeds smoothly; when the drill bit (306) reaches a predetermined depth, the drilling motor (305) and the lifting assembly are stopped; Step 5: Take out the core sample; Unscrew the fixing valve (322) at one end of the fixing stud (320), remove the fixing ring (321), push the positioning piece (319) downward, so that the push rod (315) can slide freely 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); temporarily place the removed core sample in a storage tank (504) for subsequent arc surface compression method concrete strength test.

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