A drilling equipment for municipal highway construction engineering
The drilling device addresses dust and sample retention issues by using a sampling drill bit with water injection and expansion water bags for efficient sample retrieval, improving highway construction sampling efficiency.
Patent Information
- Application Number
- CN202411150167.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2024-12-27
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing highway roadbed sample sampling devices generate dust during drilling, and samples often get stuck in the drill bit, making sampling inefficient and difficult.
A drilling device with a sampling drill bit connected to a driving motor, telescopic rod, and a mechanism for water injection and sample retrieval, including expansion water bags and gears for easy sample extraction.
The device minimizes dust generation, ensures samples are retained in the drill bit for easy removal, and enhances drilling efficiency by facilitating smooth sample extraction.
Smart Images
Figure CN118654937B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of engineering construction, in particular to a drilling device used in municipal highway construction engineering. Background Art
[0002] In municipal construction, highway engineering is a very important project. Highway engineering refers to the investigation, measurement, design, construction, maintenance and management of highway structures. Highway engineering structures include: roadbed, pavement, bridges, culverts, tunnels, drainage systems, safety protection facilities, greening and traffic monitoring facilities, as well as houses, workshops and other service facilities used for construction, maintenance and monitoring. During the implementation of the highway engineering plan, the engineering management department should prepare a sub-project schedule according to the order in which the projects need to be completed, and then arrange a general schedule based on the progress of each project, and pay attention to the fact that the sub-projects should not interfere with each other. The main aspects include: measurement and layout that need to be supplemented before construction, material supply and testing, equipment and maintenance, equipment and maintenance of transportation tools, labor organization and deployment, technician training and assessment, water and electricity supply, site safety facilities, site emergency facilities, medical and health care, employee life, statistical analysis of engineering quotas and progress, financial management, etc.
[0003] In the process of implementing highway projects, it is often necessary to drill holes in construction materials to take samples, and then test the samples. However, the existing highway roadbed sample sampling devices have shortcomings when used. For example, when the sampling drill drills the road surface, there will be a lot of dust, which affects the construction environment. In addition, after the drilling is completed, the sample may still be in the hole, which is difficult to remove. Moreover, if the sample is brought out of the hole by the drill bit, the sample may be stuck inside the drill bit, which is also difficult to remove. All of these will cause certain troubles to the sampling, so improvements are needed. Summary of the invention
[0004] The purpose of the present invention is to provide a drilling device for municipal highway construction engineering to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a drilling equipment for municipal highway construction engineering, comprising a frame plate, the frame plates are symmetrically arranged, a supporting bottom plate is integrally arranged at the bottom of the frame plates, a column is arranged between the two frame plates, a side support rod is respectively arranged on the two side walls of the column, the end of the side support rod is connected to a limiting slider, the limiting slider is slidably arranged inside the sliding groove on the frame plate, the tops of the two frame plates are connected with a top beam, the top beam is an inverted U-shaped structure, a telescopic rod is installed at the center bottom of the top beam, the bottom end of the telescopic rod is fixedly connected to the top of the column, a driving motor is arranged inside the column, and a sampling drill bit for facilitating sampling is connected to the output end of the driving motor.
[0006] Preferably, the outer side wall of the frame plate is provided with a scale, the scale is located on the side of the opening of the sliding groove, and the scale is used to display the height position of the limit sliding block.
[0007] Preferably, a plurality of crushing teeth are provided at the bottom of the sampling drill bit.
[0008] Preferably, a connecting column is provided between the sampling drill bit and the output end of the driving motor, an outer sleeve is sleeved on the outer portion of the upper section of the connecting column, a side guard plate is connected between the side walls of the two frame plates, a pump is installed on the side guard plate, a water pipe is connected to the water inlet end of the pump, a liquid injection pipe is connected to the water outlet end of the pump, the liquid injection pipe passes through the outer sleeve, a plurality of flow holes are opened on the section of the connecting column located inside the outer sleeve, a spherical cavity is provided in the middle of the connecting column, a steel ball is rotatably installed inside the spherical cavity, an adjusting inner hole is provided in the steel ball, and the bottom surface of the steel ball is connected to A bottom column is connected, a first gear is connected to the bottom end of the bottom column, a side shaft is rotatably installed on the side wall of the connecting column, a torsion block is arranged at one end of the side shaft located outside the connecting column, a second gear is arranged at one end of the side shaft located inside the connecting column, the second gear is meshingly connected with the first gear, a bottom block is arranged below the steel ball, three docking holes are arranged on the bottom block, a first flow tube, a second flow tube and a third flow tube are respectively connected to the bottom of the three docking holes, and the bottoms of the first flow tube, the second flow tube and the third flow tube are respectively connected to a liquid flow channel inside the sampling drill bit.
[0009] Preferably, the inner wall of the outer ring and the connecting column are rotatably connected via two sealed bearings.
[0010] Preferably, the adjusting inner hole is a bent structure, the upper end opening of the adjusting inner hole is located on the top surface of the steel ball, and the lower end opening of the adjusting inner hole is located obliquely below the steel ball.
[0011] Preferably, a plurality of liquid spraying ports are arranged on the inner side wall of the bottom end of the sampling drill bit and between the crushing teeth, the liquid spraying ports are connected to a liquid flow channel inside the sampling drill bit, and the first flow pipe is connected to the liquid flow channel.
[0012] Preferably, a plurality of embedding grooves are provided on the inner side wall of the sampling drill bit, a clamping plate is installed in the embedding groove, a liquid inlet is provided in the middle of one side where the clamping plate is embedded in the embedding groove, two first expansion water bags and two first return springs are also provided on this side, the liquid inlet is connected to a liquid flow channel, and the second flow tube is connected to this liquid flow channel.
[0013] Preferably, the interior of the splint is a hollow structure, the liquid inlet and the two first expansion water bags are connected to the internal space of the splint, and a pressure relief port is provided at the end of the splint.
[0014] Preferably, a stripping plate is movably provided at the inner top of the sampling drill bit, a second expansion water bag is provided between the stripping plate and the inner top surface of the sampling drill bit, the second expansion water bag is connected to a liquid flow channel, the third flow pipe is connected to the liquid flow channel, and a plurality of second return springs are connected between the outer ring of the upper surface of the stripping plate and the inner top surface of the sampling drill bit.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] 1. The drilling equipment for municipal highway construction projects proposed by the present invention is provided with a sampling drill bit for easy sampling when drilling holes for sampling on the road surface. The driving motor is started to drive the sampling drill bit to rotate, and then the telescopic rod is extended to push the column down, so that the sampling drill bit can drill holes in the road surface for sampling. When drilling, a large amount of dust will not be generated. After the drilling is completed, the sample will be fixed in the sampling drill bit and rise accordingly, and will not remain in the hole. Moreover, it is easy to take the sample out of the sampling drill bit, which is more convenient to use and improves the efficiency of drilling sampling.
[0017] 2. When drilling and sampling, the pump starts to draw water from the injection pipe and injects it into the outer ring. Then the water enters the connecting column from the flow hole. Then the water passes through the adjusting inner hole, the first flow pipe and the liquid flow channel and is sprayed out from the liquid spray port, which can thoroughly wet the drilled hole to prevent a large amount of dust from being generated and avoid polluting the construction environment. When the drilling is completed, the drive motor is stopped, and the second gear is driven to rotate by rotating the torsion block. Since the second gear and the first gear are meshed and connected, the first gear can drive the steel ball to rotate, thereby aligning the adjusting inner hole with the other docking hole. The water pumped by the pump enters the second flow pipe, and then enters the splint through the liquid flow channel and the liquid inlet. Then water enters the first expansion water bag, causing the first expansion water bag to expand and stretch to push the splint inward, and several first expansion water bags clamp the sample. Then the telescopic rod contracts to pull the sampling drill bit up, so that the sample can be moved out of the hole along with the sampling drill bit; when the sampling drill bit rises to a certain height, the twist block is rotated again to drive the steel ball to adjust the bottom opening of the inner hole and the other docking hole to be aligned, and the pump pumps water into the third flow pipe, thereby allowing water to enter the second expansion water bag. The second expansion water bag expands and stretches to push the stripper plate down, and the stripper plate pushes the sample inside the sampling drill bit out to avoid getting stuck in the sampling drill bit, making sampling easier. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the structure of the device of the present invention.
[0019] Figure 2 This is a structural diagram of the device of the present invention from another perspective.
[0020] Figure 3 This is a structural diagram of the connection between the column and the sampling drill bit of the present invention.
[0021] Figure 4 This is a bottom view of the sampling drill bit of the present invention.
[0022] Figure 5 It is a schematic diagram of the distribution structure of the splints of the present invention.
[0023] Figure 6 It is a structural diagram of the splint of the present invention.
[0024] Figure 7 It is a schematic diagram of the steel ball structure of the present invention.
[0025] Figure 8 It is a schematic diagram of the connecting column structure of the present invention.
[0026] Fig. 9 for Figure 8 Enlarged view of point A in the middle.
[0027] Fig.10 This is a schematic diagram of the internal top structure of the sampling drill bit of the present invention.
[0028] In the figure: frame plate 1, column 2, drive motor 201, sliding groove 3, top beam 4, telescopic rod 5, side support rod 6, limit slider 7, scale ruler 8, sampling drill bit 9, crushing tooth 901, liquid flow channel 902, connecting column 10, outer ring 11, sealed bearing 12, flow hole 13, side guard plate 14, pump 15, injection pipe 16, spherical cavity 17, steel ball 18, adjustment inner hole 19, bottom column 20, first gear 21, side shaft 22, torsion block 23, second gear 24, bottom block 25, docking hole 26, first flow pipe 27, second flow pipe 28, third flow pipe 29, liquid spray port 30, clamping plate 31, liquid inlet 32, first expansion water bag 33, first return spring 34, pressure relief port 35, stripping plate 36, second expansion water bag 37, second return spring 38. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0030] See also Figures 1 to 10The present invention provides a technical solution: a drilling device for municipal highway construction engineering, comprising a frame plate 1, two frame plates 1 are symmetrically arranged, a supporting bottom plate is integrally arranged at the bottom of the frame plate 1, a column 2 is arranged between the two frame plates 1, a side support rod 6 is respectively arranged on the two side walls of the column 2, the end of the side support rod 6 is connected to a limit slider 7, the limit slider 7 is slidably arranged inside the sliding groove 3 on the frame plate 1, and a scale ruler 8 is arranged on the outer wall of the frame plate 1, the scale ruler 8 is located on the side of the opening of the sliding groove 3, and the scale ruler 8 is used to display the height position of the limit slider 7, so as to control the depth of the drilling hole.
[0031] The tops of the two frame plates 1 are connected with a top beam 4, which is an inverted U-shaped structure. A telescopic rod 5 is installed at the center bottom of the top beam 4. The bottom end of the telescopic rod 5 is fixedly connected to the top of the column 2. A driving motor 201 is arranged inside the column 2. The output end of the driving motor 201 is connected with a sampling drill bit 9 for facilitating sampling. A plurality of crushing teeth 901 are arranged at the bottom of the sampling drill bit 9 for drilling holes in the hard inside.
[0032] A connecting column 10 is provided between the sampling drill bit 9 and the output end of the driving motor 201, an outer sleeve 11 is sleeved on the upper section of the connecting column 10, a side guard plate 14 is connected between the side walls of the two frame plates 1, a pump 15 is installed on the side guard plate 14, a water pipe is connected to the water inlet end of the pump 15, a liquid injection pipe 16 is connected to the water outlet end of the pump 15, and the liquid injection pipe 16 passes through the outer sleeve 11. A plurality of flow holes 13 are provided on the section of the connecting column 10 located inside the outer sleeve 11, a spherical cavity 17 is provided in the middle of the connecting column 10, a steel ball 18 is rotatably installed inside the spherical cavity 17, an adjusting inner hole 19 is provided in the steel ball 18, and a bottom column 20 is connected to the bottom surface of the steel ball 18 A first gear 21 is connected to the bottom end of the bottom column 20, and a side shaft 22 is rotatably installed on the side wall of the connecting column 10. A torsion block 23 is provided at one end of the side shaft 22 located outside the connecting column 10, and a second gear 24 is provided on one end of the side shaft 22 located inside the connecting column 10. The second gear 24 is meshingly connected with the first gear 21. A bottom block 25 is provided below the steel ball 18, and three docking holes 26 are provided on the bottom block 25. The bottoms of the three docking holes 26 are respectively connected to a first flow tube 27, a second flow tube 28 and a third flow tube 29. The bottoms of the first flow tube 27, the second flow tube 28 and the third flow tube 29 are respectively connected to a liquid flow channel 902 inside the sampling drill bit 9.
[0033] The inner wall of the outer ring 11 and the connecting column 10 are rotatably connected via two sealing bearings 12. When the pump 15 pumps water, the water only needs to be injected into the cavity between the outer ring 11 and the connecting column 10, and the water will enter the interior of the connecting column 10 through the flow hole 13.
[0034] The adjusting inner hole 19 is a bent structure, the upper end opening of the adjusting inner hole 19 is located at the top surface of the steel ball 18, and the lower end opening of the adjusting inner hole 19 is located obliquely below the steel ball 18. The second gear 24 is driven to rotate by rotating the torsion block 23. Since the second gear 24 is meshed and connected with the first gear 21, the first gear 21 can drive the steel ball 18 to rotate, so that the adjusting inner hole 19 and the docking hole 26 to be aligned are aligned. A mark 1 is set on the torsion block 23, and a mark 2 is set on the outer periphery of the torsion block 23 on the outer wall of the connecting column 10. When the torsion block 23 is rotated, the second gear 24 is driven to rotate. Block 23 aligns mark 1 with different mark 2, so that the bottom opening of the adjusting inner hole 19 and the corresponding docking hole 26 can be aligned. Mark 2 has flushing mode, sampling mode and unloading mode respectively. When drilling, it is necessary to align the mark with the flushing mode to flush the drill hole to prevent dust. When the drilling is completed, the sample needs to be taken out of the hole. It is necessary to align mark 1 with the sampling mode to perform sampling. After the sample is taken out of the hole, it is necessary to align the mark with the unloading mode to unload the sample from the sampling drill bit 9.
[0035] A plurality of liquid spraying ports 30 are arranged on the inner side wall of the bottom end of the sampling drill bit 9 and between the crushing teeth 901. The liquid spraying ports 30 are connected to a liquid flow channel 902 inside the sampling drill bit 9, and the first flow pipe 27 is connected to the liquid flow channel 902. When drilling and sampling, the pump 15 is started to extract water from the injection pipe 16 and inject it into the outer ring 11, and then the water enters the connecting column 10 from the flow hole 13, and then the water passes through the regulating inner hole 19, the first flow pipe 27 and the liquid flow channel 902 and is sprayed out from the liquid spraying ports 30, which can thoroughly wet the drilled hole, prevent a large amount of dust from being generated, and avoid polluting the construction environment.
[0036] A plurality of embedding grooves are provided on the inner wall of the sampling drill bit 9, in which a splint 31 is installed, a liquid inlet 32 is provided in the middle of one side where the splint 31 is embedded in the embedding groove, and two first expansion water bags 33 and two first return springs 34 are also provided on this side, the liquid inlet 32 is connected to a liquid flow channel 902, the second flow pipe 28 is connected to the liquid flow channel 902, the interior of the splint 31 is a hollow structure, the liquid inlet 32 and the two first expansion water bags 33 are connected to the internal space of the splint 31, and a pressure relief port 35 is provided at the end of the splint 31, and the pressure relief port 35 is used to relieve pressure to prevent the internal parts from bursting and being damaged due to excessive pressure. When the drilling is completed, the driving motor 201 is stopped, and the second gear 24 is driven to rotate by rotating the torsion block 23. Since the second gear 24 is meshed with the first gear 21, the first gear 21 can drive the steel ball 18 to rotate, so that the adjustment inner hole 19 and the other docking hole 26 are aligned, and the water pumped by the pump 15 enters the second circulation pipe 28, and then enters the splint 31 through the liquid flow channel 902 and the liquid inlet 32, and then the water enters the first expansion water bag 33, causing the first expansion water bag 33 to expand and stretch to push the splint 31 inward, and several first expansion water bags 33 clamp the sample, and then the telescopic rod 5 contracts to pull up the sampling drill bit 9, so that the sample can be moved out of the hole along with the sampling drill bit 9.
[0037] A stripper plate 36 is movably provided at the top of the inner part of the sampling drill bit 9. The stripper plate 36 slides inside the sampling drill bit 9. In order to increase the smoothness, a ball bearing can be embedded in the side wall of the stripper plate 36 so that it will not get stuck. A second expansion water bag 37 is provided between the stripper plate 36 and the inner top surface of the sampling drill bit 9. The second expansion water bag 37 is connected to a liquid flow channel 902. The third flow pipe 29 is connected to the liquid flow channel 902. A plurality of second return springs 38 are connected between the outer ring of the upper surface of the stripper plate 36 and the inner top surface of the sampling drill bit 9. The second return springs 38 are connected to the inner top surface of the sampling drill bit 9. 8 is used to pull up the stripping plate 36 to reset it. When the sample is fixed in the sampling drill bit 9 and rises to a certain height with the sampling drill bit 9, the sample needs to be taken out. It is only necessary to rotate the twist block 23 again to drive the steel ball 18 to align the bottom opening of the adjustment inner hole 19 with the other docking hole 26. The pump 15 pumps water into the third flow pipe 29, and then the water enters the second expansion water bag 37. The second expansion water bag 37 expands and stretches to push the stripping plate 36 down. The stripping plate 36 pushes the sample inside the sampling drill bit 9 out to avoid getting stuck in the sampling drill bit 9, making sampling easier.
[0038] In actual use, the drilling equipment for municipal highway construction projects proposed by the present invention, when drilling holes for sampling on the road surface, is provided with a sampling drill bit 9 for easy sampling. The driving motor 201 is started to drive the sampling drill bit 9 to rotate, and then the telescopic rod 5 is extended to push the column 2 down, so that the sampling drill bit 9 drills holes in the road surface for sampling. When drilling, a large amount of dust will not be generated. After the drilling is completed, the sample will be fixed in the sampling drill bit 9 and rises accordingly, and will not remain in the hole. Moreover, it is easy to take the sample out of the sampling drill bit 9, which is more convenient to use, thereby improving the efficiency of drilling sampling.
[0039] When drilling and sampling, the pump 15 is started to extract water from the injection pipe 16 and inject it into the outer ring 11, and then the water enters the connecting column 10 from the flow hole 13, and then the water passes through the adjusting inner hole 19, the first flow pipe 27 and the liquid flow channel 902 and is sprayed out from the liquid spray port 30, which can thoroughly wet the drilled hole, prevent a large amount of dust from being generated, and avoid polluting the construction environment; when the drilling is completed, the driving motor 201 is stopped, and the second gear 24 is driven to rotate by rotating the torsion block 23. Since the second gear 24 and the first gear 21 are meshed and connected, the first gear 21 can drive the steel ball 18 to rotate, thereby aligning the adjusting inner hole 19 with the other docking hole 26, and the water pumped by the pump 15 enters the second flow pipe 28, and then passes through the liquid flow channel 902, the liquid inlet 32 The sample is clamped in the plurality of expansion bags 33, and then the telescopic rod 5 contracts to pull up the sampling drill bit 9, so that the sample can be moved out of the hole along with the sampling drill bit 9; when the sampling drill bit 9 rises to a certain height, the torsion block 23 is rotated again to drive the steel ball 18 to align the bottom opening of the adjustment inner hole 19 with the other docking hole 26, and the pump 15 pumps water into the third circulation pipe 29, so that the water enters the second expansion water bag 37, and the second expansion water bag 37 expands and stretches to push the stripping plate 36 down, and the stripping plate 36 pushes out the sample inside the sampling drill bit 9 to avoid getting stuck in the sampling drill bit 9, making sampling easier.
[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A drilling device for municipal highway construction engineering, comprising a frame plate (1), characterized in that: The frame plates (1) are symmetrically arranged in two pieces, the bottom of the frame plates (1) is integrally provided with a supporting bottom plate, a column (2) is arranged between the two frame plates (1), a side support rod (6) is arranged on each of the two side walls of the column (2), the end of the side support rod (6) is connected to a limit slider (7), the limit slider (7) is slidably arranged inside the sliding groove (3) on the frame plate (1), the top of the two frame plates (1) is connected to a top beam (4), the top beam (4) is an inverted U-shaped structure, a telescopic rod (5) is installed at the center bottom of the top beam (4), the bottom end of the telescopic rod (5) and the frame plate (2) are connected to each other. The column (2) is fixedly connected to the top of the column (2), a driving motor (201) is arranged inside the column (2), the output end of the driving motor (201) is connected to a sampling drill bit (9) for facilitating sampling, a connecting column (10) is arranged between the sampling drill bit (9) and the output end of the driving motor (201), an outer sleeve (11) is sleeved on the upper section of the connecting column (10), a side guard plate (14) is connected between the side walls of the two frame plates (1), a pump (15) is installed on the side guard plate (14), a water inlet end of the pump (15) is connected to a water pipe, and a water outlet end of the pump (15) is connected to a liquid injection pipe (16), The injection pipe (16) passes through the outer sleeve (11), and a plurality of flow holes (13) are formed on the section of the connecting column (10) located inside the outer sleeve (11). A spherical cavity (17) is provided in the middle of the connecting column (10), a steel ball (18) is rotatably mounted inside the spherical cavity (17), an adjusting inner hole (19) is provided inside the steel ball (18), a bottom column (20) is connected to the bottom surface of the steel ball (18), a first gear (21) is connected to the bottom end of the bottom column (20), a side shaft (22) is rotatably mounted on the side wall of the connecting column (10), and a torsion block is provided at one end of the side shaft (22) located outside the connecting column (10). (23), a second gear (24) is provided on one end of the side shaft (22) located inside the connecting column (10), the second gear (24) and the first gear (21) are meshingly connected, a bottom block (25) is provided below the steel ball (18), three docking holes (26) are provided on the bottom block (25), the bottoms of the three docking holes (26) are respectively connected to a first flow tube (27), a second flow tube (28) and a third flow tube (29), the bottoms of the first flow tube (27), the second flow tube (28) and the third flow tube (29) are respectively connected to a liquid flow channel (902) inside the sampling drill bit (9).
2. The drilling equipment for municipal highway construction engineering according to claim 1 is characterized in that: The outer side wall of the frame plate (1) is provided with a scale ruler (8), the scale ruler (8) is located on the side of the opening of the sliding groove (3), and the scale ruler (8) is used to display the height position of the limit slider (7).
3. The drilling equipment for municipal highway construction engineering according to claim 1 is characterized in that: A plurality of crushing teeth (901) are provided at the bottom of the sampling drill bit (9).
4. The drilling equipment for municipal highway construction engineering according to claim 1 is characterized in that: The inner wall of the outer ring (11) and the connecting column (10) are rotatably connected via two sealing bearings (12).
5. The drilling equipment for municipal highway construction engineering according to claim 1 is characterized in that: The adjusting inner hole (19) is a bent structure, the upper end opening of the adjusting inner hole (19) is located on the top surface of the steel ball (18), and the lower end opening of the adjusting inner hole (19) is located obliquely below the steel ball (18).
6. The drilling equipment for municipal highway construction engineering according to claim 1 is characterized in that: A plurality of liquid spraying ports (30) are provided on the inner side wall of the bottom end of the sampling drill bit (9) and between the crushing teeth (901); the liquid spraying ports (30) are connected to a liquid flow channel (902) inside the sampling drill bit (9); and the first flow pipe (27) is connected to the liquid flow channel (902).
7. The drilling equipment for municipal highway construction engineering according to claim 1 is characterized by: The inner side wall of the sampling drill bit (9) is provided with a plurality of embedded grooves, in which a clamping plate (31) is installed, and a liquid inlet (32) is provided in the middle of one side where the clamping plate (31) is embedded in the embedded groove, and two first expansion water bags (33) and two first return springs (34) are also provided on the same side, the liquid inlet (32) is connected to a liquid flow channel (902), and the second flow pipe (28) is connected to the liquid flow channel (902).
8. The drilling equipment for municipal highway construction engineering according to claim 7 is characterized in that: The interior of the clamping plate (31) is a hollow structure; the liquid inlet (32) and the two first expansion water bags (33) are connected to the internal space of the clamping plate (31); and a pressure relief port (35) is provided at the end of the clamping plate (31).
9. The drilling equipment for municipal highway construction engineering according to claim 1, characterized in that: A stripping plate (36) is movably provided at the inner top of the sampling drill bit (9), a second expansion water bag (37) is provided between the stripping plate (36) and the inner top surface of the sampling drill bit (9), the second expansion water bag (37) is connected to a liquid flow channel (902), the third flow pipe (29) is connected to the liquid flow channel (902), and a plurality of second return springs (38) are connected between the outer ring of the upper surface of the stripping plate (36) and the inner top surface of the sampling drill bit (9).