Concrete drilling sampling equipment for engineering quality supervision and detection

Abstract

This invention relates to the field of engineering quality testing technology, and discloses a concrete drilling and sampling device for engineering quality supervision and testing. The device includes a fixed frame, a motor and a suction shell fixedly connected to the outer wall of the lifting frame, a main shaft fixedly connected to the output end of the motor, an impeller fixedly connected to the outer wall of the main shaft, a gas collecting cylinder fixedly connected to the lower surface of the suction shell, an air pipe fixedly connected to the outer wall of the gas collecting cylinder, a filter cylinder fixedly connected to the upper surface of the protective cylinder, the filter cylinder fixedly connected to the outer wall of the air pipe, and a suction rod fixedly connected to the inside of the protective cylinder. By setting the motor to drive the impeller to rotate at high speed inside the suction shell, a continuous negative pressure environment is created. The protective cylinder encloses the drilling area, and the suction rod effectively collects dust generated by dry drilling and mud generated by wet drilling, avoiding environmental pollution at the work site. The protective cylinder also protects the health of the operators.

Description

Technical Field

[0001] This invention relates to the field of engineering quality testing technology, specifically to a concrete drilling and sampling device for engineering quality supervision and testing. Background Technology

[0002] In the field of engineering quality supervision and testing, concrete drilling and sampling is a crucial step in assessing structural strength. Currently, commonly used concrete drilling and sampling equipment mainly consists of a fixed frame, a lifting mechanism, a drive motor, and a sampling drill cylinder. During operation, the lifting mechanism drives the high-speed rotating sampling drill cylinder to cut and core the concrete component. However, such existing equipment generally only focuses on the drilling and sampling function, lacking effective means to control pollutants such as dust and mud generated during the operation. Because the sampling drill cylinder generates a large amount of fine dust or mud when cutting concrete at high speed, if allowed to spread freely or splash, it will not only seriously pollute the construction site environment but also pose a direct threat to the respiratory health of operators. Furthermore, splashed mud adhering to the equipment surface can easily cause the sliding guide structure to jam, affecting the stability and service life of the equipment.

[0003] Specifically, in dry drilling operations, existing equipment typically only has a simple splash guard around the sampling drill barrel. This type of splash guard can only block the radial splashing of large particles of debris, and lacks the ability to actively collect the fine dust raised under the heat of cutting. During the operation, a large amount of dust continuously overflows through the gap between the splash guard and the working surface, spreading throughout the working space, resulting in reduced visibility in the operating environment, and the dust is difficult to clean after settling.

[0004] Furthermore, during wet drilling operations, operators typically need to continuously inject water into the work area to suppress dust and cool the drill bit. Existing equipment lacks a systematic collection structure for cement slurry, causing the alkaline mud formed by the mixture of cooling water and concrete powder to splash outwards under the centrifugal force of the drill barrel, easily making the work area slippery and posing a safety hazard. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a concrete drilling and sampling device for engineering quality supervision and testing. This device solves the problem that existing equipment generally only focuses on the drilling and sampling function and lacks effective means to control pollutants such as dust and mud generated during the operation.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a concrete drilling and sampling device for engineering quality supervision and testing, comprising a fixed frame, a lifting frame slidably connected to the outer wall of the fixed frame, a motor and a suction shell fixedly connected to the outer wall of the lifting frame, a main shaft fixedly connected to the output end of the motor, an impeller fixedly connected to the outer wall of the main shaft, the impeller being located inside the suction shell, an air collecting cylinder fixedly connected to the lower surface of the suction shell, an air pipe fixedly connected to the outer wall of the air collecting cylinder, a sampling drill cylinder fixedly connected to the bottom end of the main shaft, a protective cylinder fixedly connected to the outer wall of the fixed frame, a filter cylinder fixedly connected to the upper surface of the protective cylinder, the filter cylinder fixedly connected to the outer wall of the air pipe, an air suction rod fixedly connected to the inside of the protective cylinder, the top end of the air suction rod communicating with the filter cylinder, a driving mechanism provided on the outer wall of the fixed frame, the driving mechanism being connected to the lifting frame, and an exhaust pipe fixedly connected to the outer wall of the suction shell.

[0007] Preferably, the driving mechanism includes a second motor, the outer wall of which is fixedly connected to the outer wall of the fixed frame, a lead screw is fixedly connected to the output end of the second motor, the outer wall of the lead screw is threadedly connected to the lifting frame, and the bottom end of the lead screw is rotatably connected to the outer wall of the fixed frame.

[0008] Preferably, a filter plate is fixedly connected inside the filter cylinder.

[0009] Preferably, a rotating tube is rotatably connected inside the protective cylinder, a fixed tube is rotatably connected to the outer wall of the rotating tube, the fixed tube is fixedly connected to the protective cylinder, the top end of the fixed tube communicates with the interior of the filter cylinder, and an air suction rod is fixedly connected to the outer wall of the rotating tube.

[0010] Preferably, a magnetic ring is fixedly connected to the outer wall of the sampling drill barrel, and a magnetic block is fixedly connected to the outer wall of the second suction rod, wherein the magnetic block and the magnetic ring are magnetically attracted to each other.

[0011] Preferably, an upper fixed shell is fixedly connected to the lower surface of the gas collecting cylinder, and a lower rotating shell is rotatably connected to the outer wall of the upper fixed shell. Both the lower rotating shell and the upper fixed shell are provided with connection ports.

[0012] Preferably, a valve plate is fixedly connected inside the lower rotating shell, the valve plate has a valve hole, a fixing rod is fixedly connected to the outer wall of the main shaft, the fixing rod is fixedly connected to the inside of the lower rotating shell, and a valve block is slidably connected to the outer wall of the fixing rod, the valve block slides against the valve plate.

[0013] Preferably, one end of a tension spring is fixedly connected to the outer wall of the valve block, and the other end of the tension spring is fixedly connected to the outer wall of the main shaft.

[0014] Preferably, a fixed cylinder is fixedly connected to the outer wall of the fixed frame, a connecting rod is fixedly connected to the upper surface of the lifting frame, a piston head is fixedly connected to the top of the connecting rod, the piston head is slidably connected to the inside of the fixed cylinder, an air pipe II is fixedly connected to the outer wall of the fixed cylinder, the air pipe II is fixedly connected to the outer wall of the sampling drill cylinder, and an air hole is opened inside the sampling drill cylinder, the air hole communicating with the air pipe II.

[0015] Preferably, an air inlet pipe is fixedly connected to the outer wall of the fixed cylinder, and a one-way valve is provided inside both the air inlet pipe and the second air pipe.

[0016] This invention provides a concrete drilling and sampling device for engineering quality supervision and testing. It has the following beneficial effects: 1. This invention uses a motor to drive an impeller to rotate at high speed inside the suction shell, creating a continuous negative pressure environment. A protective sleeve is used to enclose the drilling area. Combined with the suction rod, it can effectively collect dust generated by dry drilling and mud generated by wet drilling, avoiding environmental pollution at the work site. The protective sleeve also protects the health of the operators.

[0017] 2. This invention sets a magnetic ring on the sampling drill barrel and a magnetic block on the suction rod 2. By utilizing the principle of magnetic attraction, the suction rod 2 can automatically approach the borehole opening along with the sampling drill barrel during the drilling process, so that the suction port is always aligned with the source of dust and mud. Together with the fixed suction rod 1, it forms a three-dimensional adsorption network, which significantly improves the capture efficiency of high-concentration pollutants and avoids adsorption dead zones.

[0018] 3. This invention, by setting a valve plate and a centrifugal valve block inside the lower rotating shell, utilizes the centrifugal force generated by the change in spindle speed to control the sliding of the valve block, thereby automatically adjusting the opening of the valve orifice. This achieves adaptive control of the coolant or water flow rate during wet drilling operations, with a smaller flow rate at low speeds and a larger flow rate at high speeds, ensuring effective cooling under different working conditions while avoiding coolant waste.

[0019] 4. This invention, by setting up a fixed cylinder, connecting rod, and piston head, utilizes the upward movement of the lifting frame to drive the piston head to compress air or liquid, which is then discharged to the bottom of the sampling drill cylinder through air pipe two and air hole. During the extraction of the drill cylinder, positive pressure is applied to the bottom of the core sample, effectively counteracting the negative pressure suction generated during extraction. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention; Figure 2 This is a partial structural diagram of the air intake shell of the present invention; Figure 3 This is a cross-sectional schematic diagram of the internal structure of the protective cylinder of the present invention; Figure 4This is a cross-sectional schematic diagram of the internal structure of the air intake shell of the present invention; Figure 5 This is a cross-sectional schematic diagram of the internal structure of the filter cartridge of the present invention; Figure 6 This is a schematic diagram of a partial structure of the trachea of ​​the present invention; Figure 7 This is a cross-sectional view of the internal structure of the upper fixing shell of the present invention; Figure 8 This is a cross-sectional schematic diagram of the internal structure of the lower rotating shell of the present invention; Figure 9 This is a cross-sectional view of the internal structure of the fixed cylinder of the present invention; Figure 10 This is a schematic diagram of a partial pore structure of the present invention.

[0021] The components are as follows: 1. Fixed frame; 2. Lifting frame; 3. Motor 1; 4. Suction shell; 5. Impeller; 6. Main shaft; 7. Sampling drill barrel; 8. Drive mechanism; 801. Motor 2; 802. Lead screw; 9. Filter cylinder; 10. Protective cylinder; 11. Suction rod 1; 12. Air pipe 1; 13. Filter plate; 14. Rotating pipe; 15. Suction rod 2; 16. Fixed pipe; 17. Magnetic block; 18. Magnetic ring; 19. Air collecting cylinder; 20. Upper fixed shell; 21. Lower rotating shell; 22. Connecting port; 23. Valve plate; 24. Valve hole; 25. Fixed rod; 26. Valve block; 27. Tension spring; 28. Fixed cylinder; 29. ​​Connecting rod; 30. Piston head; 31. Air pipe 2; 32. Air hole; 33. Exhaust pipe; 34. Inlet pipe. Detailed Implementation

[0022] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see the appendix Figure 1 - Appendix Figure 10This invention provides a concrete drilling and sampling device for engineering quality supervision and testing, including a fixed frame 1, a lifting frame 2 slidably connected to the outer wall of the fixed frame 1, a motor 3 and an air suction shell 4 fixedly connected to the outer wall of the lifting frame 2, a main shaft 6 fixedly connected to the output end of the motor 3, an impeller 5 fixedly connected to the outer wall of the main shaft 6, the impeller 5 being located inside the air suction shell 4, an air collecting cylinder 19 fixedly connected to the lower surface of the air suction shell 4, an air pipe 12 fixedly connected to the outer wall of the air collecting cylinder 19, a sampling drill cylinder 7 fixedly connected to the bottom end of the main shaft 6, a protective cylinder 10 fixedly connected to the outer wall of the fixed frame 1, a filter cylinder 9 fixedly connected to the upper surface of the protective cylinder 10, the filter cylinder 9 fixedly connected to the outer wall of the air pipe 12, an air suction rod 11 fixedly connected to the inside of the protective cylinder 10, the top end of the air suction rod 11 communicating with the filter cylinder 9, a driving mechanism 8 provided on the outer wall of the fixed frame 1, the driving mechanism 8 being connected to the lifting frame 2, and an exhaust pipe 33 fixedly connected to the outer wall of the air suction shell 4.

[0024] Specifically, the concrete drilling and sampling equipment for engineering quality supervision and testing provided in this embodiment of the invention includes a fixed frame 1, which serves as the overall load-bearing foundation of the equipment. Its outer wall is provided with a vertical sliding guide structure, and a lifting frame 2, which can reciprocate vertically along the fixed frame 1, is slidably connected to it. A motor 3 and a suction shell 4 are fixedly installed on the outer wall of the lifting frame 2. The output end of the motor 3 is fixedly connected to the top end of the main shaft 6. The main shaft 6 vertically penetrates the shell of the suction shell 4, and an impeller 5 is fixedly connected to the outer wall of the main shaft 6. The impeller 5 is entirely located within the internal cavity of the suction shell 4. A gas collecting cylinder 19 is fixedly connected to the lower surface of the suction shell 4, and a gas pipe 12 is fixedly connected to the outer wall of the gas collecting cylinder 19. The bottom end of the main shaft 6 extends downward and is fixedly connected to a sampling drill cylinder 7, which is used for drilling and core sampling of concrete. A protective cylinder 10 is also fixedly connected to the outer wall of the fixed frame 1. The protective cylinder 10 is coaxially sleeved on the outside of the sampling drill barrel 7 to protect the drilling operation area and prevent dust or mud from splashing outwards. A filter cylinder 9 is fixedly connected to the upper surface of the protective cylinder 10. The air inlet end of the filter cylinder 9 is fixedly connected to the end of the air pipe 12. An air suction rod 11 is fixedly installed inside the protective cylinder 10. The top end of the air suction rod 11 extends upward and connects to the internal cavity of the filter cylinder 9. A drive mechanism 8 is provided on the outer wall of the fixed frame 1. The power output end of the drive mechanism 8 is connected to the lifting frame 2 to drive the lifting frame 2 to move vertically up and down along the fixed frame 1. An exhaust pipe 33 is fixedly connected to the outer wall of the air suction shell 4. When the equipment is in operation, the motor 3 starts and drives the main shaft 6 to rotate. The main shaft 6 simultaneously drives the impeller 5 to rotate at high speed inside the suction shell 4, so that a continuous negative pressure environment is formed inside the suction shell 4, the air collection cylinder 19, and the air pipe 12. The negative pressure is transmitted to the suction rod 11 inside the protective cylinder 10 through the filter cylinder 9. The suction rod 11 adsorbs and collects the dust generated in the drilling operation area. For wet drilling operations, it can simultaneously adsorb the mud generated during the operation. The bottom of the suction rod 11 is equipped with a large-diameter filter hole, which can pre-filter large particles of debris to prevent large particles from entering the pipeline and causing blockage. The exhaust pipe 33 can be connected to an external air box or water tank to collect and treat the adsorbed airflow or solid-liquid mixture.

[0025] The drive mechanism 8 includes a second motor 801, the outer wall of which is fixedly connected to the outer wall of the fixed frame 1. The output end of the second motor 801 is fixedly connected to a lead screw 802, the outer wall of which is threadedly connected to the lifting frame 2, and the bottom end of the lead screw 802 is rotatably connected to the outer wall of the fixed frame 1.

[0026] Specifically, the drive mechanism 8 includes a second motor 801, which is fixedly mounted on the top of the outer wall of the fixed frame 1. The output end of the second motor 801 faces downwards and is fixedly connected to the top of the lead screw 802. The outer wall of the lead screw 802 has a continuous external thread structure. A threaded through hole adapted to the external thread is opened at the corresponding position of the lifting frame 2. The lead screw 802 forms a threaded transmission connection with the threaded through hole of the lifting frame 2 through the external thread. The bottom end of the lead screw 802 is rotatably connected to the bottom of the outer wall of the fixed frame 1 through a bearing. During operation, the second motor 801 starts and drives the lead screw 802 to rotate on a fixed axis. Through the threaded transmission between the lead screw 802 and the lifting frame 2, the rotational motion of the lead screw 802 is converted into the vertical linear motion of the lifting frame 2, thereby driving the lifting frame 2 to rise and fall smoothly along the guide structure of the fixed frame 1.

[0027] The filter cartridge 9 is internally fixedly connected to a filter plate 13.

[0028] Specifically, a filter plate 13 is fixedly installed inside the filter cartridge 9. The filter plate 13 is fixed inside the cavity of the filter cartridge 9 with a detachable installation structure. The filter hole diameter of the filter plate 13 is smaller than the pre-filter hole diameter at the bottom of the suction rod 11. It can perform secondary fine filtration of fine particles, dust and debris in the pre-filtered airflow or fluid, and prevent fine particles from entering the suction shell 4 and causing impact wear on the impeller 5. At the same time, the detachable installation structure makes it convenient for operators to disassemble, clean or replace the filter plate 13 regularly.

[0029] The protective cylinder 10 is rotatably connected to a rotating tube 14 inside, and a fixed tube 16 is rotatably connected to the outer wall of the rotating tube 14. The fixed tube 16 is fixedly connected to the protective cylinder 10, and the top end of the fixed tube 16 is connected to the interior of the filter cylinder 9. An air suction rod 15 is fixedly connected to the outer wall of the rotating tube 14.

[0030] Specifically, a rotating tube 14 is rotatably connected inside the protective cylinder 10. A fixed tube 16 is rotatably connected to the top of the rotating tube 14 via a rotating sealing joint. The outer wall of the fixed tube 16 is fixedly connected to the inner wall of the protective cylinder 10. The top of the fixed tube 16 extends upwards and communicates with the internal cavity of the filter cylinder 9. A second suction rod 15 is fixedly connected to the outer wall of the rotating tube 14, and the inner cavity of the second suction rod 15 communicates with the inner cavity of the rotating tube 14. The inner wall of the protective cylinder 10 provides stable rotational support for the rotating tube 14, allowing the rotating tube 14 to drive the second suction rod 15 to rotate circumferentially inside the protective cylinder 10. This allows for flexible adjustment of the suction port position of the second suction rod 15, adapting to different operating conditions, expanding the coverage area of ​​negative pressure adsorption, and improving the collection effect of dust and slurry.

[0031] A magnetic ring 18 is fixedly connected to the outer wall of the sampling drill barrel 7, and a magnetic block 17 is fixedly connected to the outer wall of the suction rod 15. The magnetic block 17 and the magnetic ring 18 are magnetically attracted to each other.

[0032] Specifically, a magnetic ring 18 is fixedly connected to the outer wall of the sampling drill barrel 7. The magnetic ring 18 moves up, down, and rotates synchronously with the sampling drill barrel 7. A magnetic block 17 is fixedly connected to the outer wall of the suction rod 15. The magnetic blocks 17 and the magnetic ring 18 are magnetically attracted to each other. When the sampling drill barrel 7 is fed downward into the borehole by the drive mechanism 8, the magnetic ring 18 on the outer wall of the sampling drill barrel 7 moves downward accordingly. As the sampling drill barrel 7 drills deeper, it gradually approaches the magnetic block 17 on the suction rod 15. Through the magnetic attraction between the magnetic ring 18 and the magnetic block 17, the magnetic block 17 is driven to move closer to the sampling drill barrel 7. This causes the air intake of the suction rod 15 to move synchronously with the magnetic block 17 to the borehole opening position, cooperating with the fixed suction rod 11 to adsorb and collect the dust and mud generated during the drilling operation, greatly improving the dust and mud collection efficiency of the working area.

[0033] An upper fixed shell 20 is fixedly connected to the lower surface of the gas collecting cylinder 19. A lower rotating shell 21 is rotatably connected to the outer wall of the upper fixed shell 20. Both the lower rotating shell 21 and the upper fixed shell 20 have connection ports 22.

[0034] Specifically, an upper fixed shell 20 is fixedly connected to the lower surface of the gas collecting cylinder 19. The outer wall of the upper fixed shell 20 is rotatably connected to a lower rotating shell 21 through a rotary sealing structure. The internal cavities of the upper fixed shell 20 and the lower rotating shell 21 are interconnected, and the rotary connection position maintains a dynamic seal to prevent fluid leakage during operation. Both the outer walls of the upper fixed shell 20 and the lower rotating shell 21 are provided with connection ports 22. The upper fixed shell 20 provides stable rotational support for the lower rotating shell 21. The connection ports 22 on the upper and lower sides can be connected to the water inlet pipe and the water outlet pipe required for wet drilling operations, respectively, to provide a channel for the delivery of coolant or clean water for wet drilling operations. This adapts to both dry drilling and wet drilling operating conditions, expanding the applicability of the equipment.

[0035] A valve plate 23 is fixedly connected inside the lower rotating shell 21. The valve plate 23 has a valve hole 24. A fixing rod 25 is fixedly connected to the outer wall of the main shaft 6. The fixing rod 25 is fixedly connected to the inside of the lower rotating shell 21. A valve block 26 is slidably connected to the outer wall of the fixing rod 25. The valve block 26 slides against the valve plate 23.

[0036] Specifically, a valve plate 23 is fixedly connected inside the lower rotating shell 21. A valve hole 24 is opened on the surface of the valve plate 23. The valve hole 24 is used to connect the fluid channels on the upper and lower sides of the valve plate 23. A fixing rod 25 is fixedly connected to the outer wall of the main shaft 6. The end of the fixing rod 25 is fixedly connected to the inner wall of the lower rotating shell 21, so that the main shaft 6 can drive the lower rotating shell 21 to rotate synchronously through the fixing rod 25. A sliding guide structure is provided on the outer wall of the fixing rod 25, and a valve block 26 is slidably connected thereto. The end face of the valve block 26 slides against the surface of the valve plate 23. During equipment operation, the rotation of the main shaft 6 synchronously drives the fixed rod 25, the lower rotating shell 21, and the valve block 26 to rotate synchronously. The valve block 26 generates centrifugal force as it rotates, and slides away from the main shaft 6 along the guide structure of the fixed rod 25. Through the change of the sliding position of the valve block 26, it cooperates with the valve hole 24 on the valve plate 23, and adjusts the conduction cross-sectional area of ​​the valve hole 24. Thus, the flow rate of coolant or clean water flowing through the valve hole 24 is automatically controlled according to the rotation speed of the main shaft 6, adapting to the cooling needs of operation at different speeds, and realizing adaptive adjustment of flow rate.

[0037] One end of a tension spring 27 is fixedly connected to the outer wall of the valve block 26, and the other end of the tension spring 27 is fixedly connected to the outer wall of the main shaft 6.

[0038] Specifically, one end of a tension spring 27 is fixedly connected to the outer wall of the valve block 26, and the other end of the tension spring 27 is fixedly connected to the outer wall of the main shaft 6. When the speed of the main shaft 6 decreases or stops rotating, the centrifugal force on the valve block 26 decreases or disappears simultaneously. The tension spring 27, through its own elastic restoring force, pulls the valve block 26 to slide and reset along the guide structure of the fixed rod 25 towards the main shaft 6, so that the valve block 26 forms a seal against the valve hole 24 on the valve plate 23, realizing the automatic closure of the fluid channel and preventing coolant or water from continuing to leak when the equipment is stopped. The contact surface between the valve plate 23 and the valve block 26 can use a conventional sealing structure to ensure the sealing effect.

[0039] A fixed cylinder 28 is fixedly connected to the outer wall of the fixed frame 1. A connecting rod 29 is fixedly connected to the upper surface of the lifting frame 2. A piston head 30 is fixedly connected to the top of the connecting rod 29. The piston head 30 is slidably connected inside the fixed cylinder 28. An air pipe 31 is fixedly connected to the outer wall of the fixed cylinder 28. The air pipe 31 is fixedly connected to the outer wall of the sampling drill cylinder 7. An air hole 32 is opened inside the sampling drill cylinder 7. The air hole 32 is connected to the air pipe 31.

[0040] Specifically, a fixed cylinder 28 is fixedly connected to the outer wall of the fixed frame 1. The inner cavity of the fixed cylinder 28 is a sealed cavity structure. A connecting rod 29 is fixedly connected to the upper surface of the lifting frame 2. The top end of the connecting rod 29 extends upward and is fixedly connected to a piston head 30. The outer wall of the piston head 30 is sealed and fitted to the inner wall of the fixed cylinder 28, and can slide vertically along the inner wall of the fixed cylinder 28. A second air pipe 31 is fixedly connected to the bottom of the outer wall of the fixed cylinder 28. The end of the second air pipe 31 is fixedly connected to the outer wall of the sampling drill cylinder 7. An air hole 32 is opened inside the sampling drill cylinder 7. One end of the air hole 32 is connected to the inner cavity of the second air pipe 31, and the other end of the air hole 32 extends to the bottom of the core sampling cavity of the sampling drill cylinder 7. After core drilling is completed, the drive mechanism 8 moves the lifting frame 2 upward, and the lifting frame 2 moves the connecting rod 29 upward simultaneously. The connecting rod 29 moves the piston head 30 upward along the inner wall of the fixed cylinder 28, squeezing the gas or liquid inside the fixed cylinder 28. This causes the fluid inside the fixed cylinder 28 to be transported through the second air pipe 31 to the air hole 32 of the sampling drill tube 7, and finally discharged through the air hole 32 to the bottom of the core sampling cavity of the sampling drill tube 7. During the upward pulling process of the sampling drill tube 7, fluid is introduced into the contact surface between the core sample and the sampling drill tube 7 to counteract the negative pressure formed between the bottom of the sampling drill tube 7 and the core sample, preventing the core sample from falling off or breaking as the sampling drill tube 7 moves upward. At the same time, it reduces the pulling resistance of the sampling drill tube 7 and improves the success rate of core drilling and the integrity of the core sample.

[0041] An air inlet pipe 34 is fixedly connected to the outer wall of the fixed cylinder 28. Both the air inlet pipe 34 and the air pipe 31 are equipped with one-way valves.

[0042] Specifically, an air inlet pipe 34 is fixedly connected to the outer wall of the fixed cylinder 28. Both the air inlet pipe 34 and the second air pipe 31 are equipped with one-way valves. The one-way valve inside the air inlet pipe 34 only allows external fluid to enter the inner cavity of the fixed cylinder 28 in one direction, preventing the fluid inside the fixed cylinder 28 from leaking out through the air inlet pipe 34 and ensuring stable pressure when the piston head 30 is extruded. The one-way valve inside the second air pipe 31 only allows the fluid inside the fixed cylinder 28 to flow unidirectionally to the air hole 32 of the sampling drill barrel 7, preventing dust, mud, or coolant generated during drilling operations from flowing back into the fixed cylinder 28 through the second air pipe 31, ensuring the cleanliness of the inner cavity of the fixed cylinder 28 and the normal sliding of the piston head 30.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A concrete drilling and sampling device for engineering quality supervision and testing, comprising a fixing frame (1), characterized in that, A lifting frame (2) is slidably connected to the outer wall of the fixed frame (1). A motor (3) and an air intake shell (4) are fixedly connected to the outer wall of the lifting frame (2). A main shaft (6) is fixedly connected to the output end of the motor (3). An impeller (5) is fixedly connected to the outer wall of the main shaft (6). The impeller (5) is located inside the air intake shell (4). An air collecting cylinder (19) is fixedly connected to the lower surface of the air intake shell (4). An air pipe (12) is fixedly connected to the outer wall of the air collecting cylinder (19). A sampling drill cylinder (7) is fixedly connected to the bottom end of the main shaft (6). The outer wall of the fixed frame (1) is fixedly connected to a protective cylinder (10), the upper surface of the protective cylinder (10) is fixedly connected to a filter cylinder (9), the filter cylinder (9) is fixedly connected to the outer wall of the air pipe (12), the inside of the protective cylinder (10) is fixedly connected to a suction rod (11), the top end of the suction rod (11) is connected to the filter cylinder (9), the outer wall of the fixed frame (1) is provided with a drive mechanism (8), the drive mechanism (8) is connected to the lifting frame (2), and the outer wall of the suction shell (4) is fixedly connected to an exhaust pipe (33).

2. The concrete drilling and sampling equipment for engineering quality supervision and testing according to claim 1, characterized in that, The drive mechanism (8) includes a second motor (801), the outer wall of which is fixedly connected to the outer wall of the fixed frame (1), and a lead screw (802) is fixedly connected to the output end of the second motor (801). The outer wall of the lead screw (802) is threadedly connected to the lifting frame (2), and the bottom end of the lead screw (802) is rotatably connected to the outer wall of the fixed frame (1).

3. The concrete drilling and sampling equipment for engineering quality supervision and testing according to claim 2, characterized in that, The filter cylinder (9) is fixedly connected to a filter plate (13).

4. The concrete drilling and sampling equipment for engineering quality supervision and testing according to claim 3, characterized in that, The protective cylinder (10) is rotatably connected to a rotating tube (14), and the outer wall of the rotating tube (14) is rotatably connected to a fixed tube (16). The fixed tube (16) is fixedly connected to the protective cylinder (10), and the top end of the fixed tube (16) is connected to the interior of the filter cylinder (9). The outer wall of the rotating tube (14) is fixedly connected to a second suction rod (15).

5. A concrete drilling and sampling device for engineering quality supervision and testing according to claim 4, characterized in that, A magnetic ring (18) is fixedly connected to the outer wall of the sampling drill (7), and a magnetic block (17) is fixedly connected to the outer wall of the suction rod (15). The magnetic block (17) and the magnetic ring (18) are magnetically attracted to each other.

6. The concrete drilling and sampling equipment for engineering quality supervision and testing according to claim 1, characterized in that, The lower surface of the gas collecting cylinder (19) is fixedly connected to an upper fixed shell (20), and the outer wall of the upper fixed shell (20) is rotatably connected to a lower rotating shell (21). Both the lower rotating shell (21) and the upper fixed shell (20) are provided with connection ports (22).

7. A concrete drilling and sampling device for engineering quality supervision and testing according to claim 6, characterized in that, A valve plate (23) is fixedly connected inside the lower rotating shell (21). The valve plate (23) has a valve hole (24). A fixing rod (25) is fixedly connected to the outer wall of the main shaft (6). The fixing rod (25) is fixedly connected inside the lower rotating shell (21). A valve block (26) is slidably connected to the outer wall of the fixing rod (25). The valve block (26) slides against the valve plate (23).

8. A concrete drilling and sampling device for engineering quality supervision and testing according to claim 7, characterized in that, One end of a tension spring (27) is fixedly connected to the outer wall of the valve block (26), and the other end of the tension spring (27) is fixedly connected to the outer wall of the main shaft (6).

9. A concrete drilling and sampling device for engineering quality supervision and testing according to claim 1, characterized in that, A fixed cylinder (28) is fixedly connected to the outer wall of the fixed frame (1), a connecting rod (29) is fixedly connected to the upper surface of the lifting frame (2), a piston head (30) is fixedly connected to the top of the connecting rod (29), the piston head (30) is slidably connected to the inside of the fixed cylinder (28), a second air pipe (31) is fixedly connected to the outer wall of the fixed cylinder (28), the second air pipe (31) is fixedly connected to the outer wall of the sampling drill cylinder (7), and an air hole (32) is opened inside the sampling drill cylinder (7), the air hole (32) is connected to the second air pipe (31).

10. A concrete drilling and sampling device for engineering quality supervision and testing according to claim 9, characterized in that, An air inlet pipe (34) is fixedly connected to the outer wall of the fixed cylinder (28), and a one-way valve is provided inside both the air inlet pipe (34) and the second air pipe (31).

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