Sampling device for building main body detection

Abstract

The invention relates to the technical field of detection sampling, and discloses a sampling device for building main body detection, which solves the problems proposed in the background technology, and comprises a handheld part, the handheld part comprises a handheld component, the handheld component is provided with a rotating motor, the output end of the rotating motor penetrates through the handheld component and is connected with a rotating shaft, and the rotating shaft is connected with the handheld component. A damper is arranged between the rotating shaft and the handheld component, the other end of the rotating shaft is connected with the connecting component, the connecting component is of a hollow structure, a sampling part is arranged at the bottom of the connecting component and comprises a drill bit, the drill bit is arranged at the bottom of the connecting component, and a through cavity is formed in the drill bit. Compared with the traditional mechanical drilling equipment, the device is small in size and light in weight, can be easily carried and operated by a user, can adapt to various field environments, and particularly improves the reliability and accuracy of sampled data in narrow space or complex terrains.

Description

Technical Field

[0001] The invention belongs to the technical field of detection sampling, and in particular relates to a sampling device for building main body detection. Background Art

[0002] In the fields of modern construction, quality inspection, civil engineering, etc., sampling of building bodies is a crucial link. By sampling and analyzing the building structure and the surrounding soil, the physical and chemical properties of the materials as well as the structural stability can be obtained. Traditional sampling devices are widely used in the sampling of soil, concrete and other materials in the building body, providing a basis for subsequent engineering quality inspections.

[0003] At present, most common building main body sampling devices are large-scale mechanized drilling equipment. However, traditional drilling equipment is usually huge in size and heavy in weight. It requires professional personnel to operate and auxiliary equipment to support and fix. It often cannot adapt to changes in the on-site environment, especially in small spaces or complex terrains. It cannot be conveniently carried and used, which affects the efficiency and quality of sampling work. For this reason, we proposed a sampling device for building main body detection. Summary of the invention

[0004] In order to solve the problems raised in the background technology, the present invention provides the following technical solutions: a sampling device for building main body detection, comprising a handheld part, the handheld part comprises a handheld component, a rotating motor is arranged on the handheld component, an output end of the rotating motor passes through the handheld component and is connected to a rotating shaft, a damper is arranged between the rotating shaft and the handheld component, the other end of the rotating shaft is connected to a connecting component, the connecting component has a hollow structure, and a sampling part is arranged at the bottom of the connecting component,

[0005] The sampling part includes a drill bit, which is arranged at the bottom of the connecting member, and has a through cavity inside the drill bit. The connecting member is provided with an opening matching the through cavity. An electric telescopic rod is arranged in the hollow structure, and the electric telescopic rod passes through the opening and is arranged in the through cavity. An electromagnetic suction cup is arranged at the bottom of the electric telescopic rod, and a sampling tube is arranged at the bottom of the electromagnetic suction cup. The sampling tube has a metal shell, and sampling tubes of different lengths can be replaced according to different sampling requirements. A cooling component is arranged in the hollow structure. An extension part is arranged on the handheld member, and the extension part is arranged on both sides of the handheld member. A verticality measuring device and a depth indicating device are respectively arranged on the extension parts on both sides.

[0006] Preferably, the connecting member includes an upper plate, a lower plate and a vertical rod, the upper plate is connected to the rotating shaft, and there are multiple vertical rods, which are evenly distributed between the upper plate and the lower plate and connected to form a hollow structure, which can reduce the overall weight of the device, ensure its stability, provide good supporting strength, and ensure that the electric telescopic rod can be freely extended and retracted.

[0007] Preferably, the cooling assembly includes a liquid storage tank, a nozzle is provided on the lower plate, the nozzle is connected to the liquid storage tank through a delivery channel, the nozzle is a hollow annular tube, the nozzle is sleeved on the outside of the electric telescopic rod, a plurality of micro-spray holes are provided at the bottom of the nozzle, the plurality of micro-spray holes are located at the upper part of the through cavity, a liquid suction groove is provided at the bottom of the through cavity, the liquid suction groove is connected to the liquid storage tank through a reflux channel, a micro pump is provided on the reflux channel, and the annular nozzle is installed on the outside of the electric telescopic rod, which can evenly spray the coolant onto the drill bit, maintain the temperature of the drill bit, and avoid overheating. The coolant is recovered through the liquid suction groove and sent back to the liquid storage tank through the reflux channel, thereby ensuring the closed-loop circulation of the system, saving coolant, keeping the drill bit cooled during drilling, preventing the drill bit from overheating, and extending the service life of the drill bit.

[0008] Preferably, the liquid suction groove is an annular groove with an annular opening in the center. The inner diameter of the annular opening is larger than the outer diameter of the sampling tube. The annular opening forms a wrapping structure around the sampling tube, so that the liquid suction groove can tightly surround the sampling tube to recover the coolant, avoid the sampling tube from getting stuck, and make the recovery of the coolant smoother.

[0009] Preferably, the verticality measuring device includes a dial, a suspension hanger is provided at the bottom of the dial through the extension part, a sphere is provided at the bottom of the suspension hanger, the sphere can rotate freely around the fixing point of the suspension hanger, the dial has an indicator needle, the indicator needle is connected to the sphere by a connecting line, the swing of the sphere drives the indicator needle to deviate, and it can monitor in real time whether the sampling device remains vertical. When the equipment deviates from vertical, the sphere will swing, and the indicator needle will indicate the angle of deviation, providing the operator with necessary feedback to help correct the verticality.

[0010] Preferably, the depth indicating device includes a bevel gear set, which includes a first bevel gear and a second bevel gear, the first bevel gear is sleeved on the rotating shaft, the second bevel gear and the first bevel gear are meshed with each other, a depth indicator is provided on the extension portion, a transmission shaft is provided on the depth indicator, the transmission shaft and the second bevel gear are connected by a belt, a counting mechanism is provided in the depth indicator, and a reset button is provided on the depth indicating device, the bevel gear set transmits the rotational motion on the rotating shaft from the second bevel gear to the depth indicator, the belt serves as a connected power transmission device, and can ensure smooth and non-slip power transmission, the counting mechanism records the number of rotations or angles of the rotating shaft, so as to calculate the depth to which the drill bit has drilled, and the change depth D1 of the depth indicator can be calculated by the following formula

[0011]

[0012] D1 is the depth displayed by the depth indicator, D2 is the depth of each rotation of the drill bit, n1 is the number of teeth on the first bevel gear, and n2 is the number of teeth on the second bevel gear. That is, each time the rotating shaft rotates a certain angle, the depth indicator can display the corresponding depth according to the proportional relationship of the gears.

[0013] Preferably, the drill bit is provided with a spiral blade, and the spiral blade has three layers. The gap between the three layers of spiral blades gradually decreases. The three layers of spiral blades are arranged layer by layer from the outside to the inside. The gradually decreasing gap can improve the cutting efficiency and reduce the sticking phenomenon. The outer spiral blade is mainly responsible for the initial cutting work, while the inner spiral blade further refines the cutting to make the drilling smoother.

[0014] Preferably, a hand-holding hole is provided on the hand-holding component, and an arc structure is provided on the hand-holding hole. The user can pass his fingers through the hand-holding hole to more firmly hold the sampling device. The arc structure conforms to ergonomics, can make the hand feel more comfortable, and reduce fatigue caused by long-term operation.

[0015] Preferably, the end of the sampling tube away from the electromagnetic chuck is fixed on the same horizontal plane as the bottom of the drill bit, ensuring alignment between the drill bit and the sampling tube, avoiding inaccurate sampling or deviation due to inconsistent angles during the sampling process, and avoiding operational difficulty caused by offset.

[0016] Preferably, the liquid storage tank is provided with a coolant, and the coolant is made of plant-based, natural minerals or biodegradable materials, which can not only effectively reduce the temperature of the drill bit and prevent overheating, but also avoid the pollution problem of chemical substances in traditional coolants, and meet the requirements of environmental protection and sustainable development.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] When working, the user holds the hand-held component and controls the rotation of the drill bit through the rotating motor. The rotating motor transmits the rotating power through the rotating shaft to drive the connecting component to rotate, and reduces the vibration through the damper to make the transmission smoother. The drill bit under the connecting component rotates and drills into the soil downward. If the drill bit is idle, the depth indicator device generates a reading, which is cleared by pressing the zero button. The electric telescopic rod runs through the connecting component and absorbs the sampling tube through the electromagnetic suction cup. The sampling tube has a metal shell and is fixed under the adsorption of the electromagnetic suction cup. As the drill bit rotates, it drills into the soil. The sampling tube follows the drill bit into the soil and collects soil samples on the drill bit path. The soil samples in the sampling tube are pushed forward layer by layer as the drill bit goes deeper. The bottom soil continuously pushes the upper soil layer, ensuring continuous sampling from the surface soil to the deep soil layer, effectively collecting soil samples within the target depth range. The coolant flows from the reservoir into the drill bit through the nozzle to reduce the wear of the drill bit and keep the drill bit at a suitable temperature to prevent overheating. When the drill bit is drilling, the depth indicator continuously monitors the drilling depth of the drill bit. The bevel gear set rotates through the rotating shaft. The motion is transmitted to the depth indicator, and the actual drilling depth of the drill bit is displayed. The verticality measuring device monitors in real time whether the drill bit remains perpendicular to the ground. The angle change is sensed by the free swing of the sphere. The deviation of the indicator needle indicates that the verticality has changed. The user can adjust the angle of the device according to the value on the dial to ensure that the drill bit goes deep vertically. When the drill bit completes drilling to a certain depth, the soil sample in the sampling tube is completely collected, and the rotary motor is driven to reverse. During this process, the electromagnetic suction cup continues to maintain the adsorption force on the sampling tube to ensure that the sample is not damaged or leaked. The drill bit withdraws from the soil and leaves the drilling position. The electric telescopic rod pushes the sampling tube out of the drill bit to complete the sampling process. The electromagnetic suction cup unlocks the sampling tube. The staff retrieves the sampling tube that has collected the sample and replaces it with a new sampling tube. The new sampling tube is re-locked with the electromagnetic suction cup and is ready to start the next sampling. Compared with traditional mechanized drilling equipment, it is small in size and light in weight. Users can easily carry and operate it. It can adapt to various on-site environments, especially in small spaces or complex terrains, and improves the reliability and accuracy of sampling data. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a front view structural schematic diagram of the present invention as a whole;

[0021] Figure 2 It is a schematic diagram of the section structure of the drill bit of the present invention;

[0022] Figure 3 It is a side view structural schematic diagram of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the verticality measuring device of the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the depth indicating device of the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of the liquid suction trough of the present invention;

[0026] In the figure: 1. hand-held component; 2. rotating motor; 3. rotating shaft; 4. damper; 5. connecting component; 6. upper plate; 7. lower plate; 8. vertical rod; 9. drill bit; 10. electric telescopic rod; 11. through cavity; 12. electromagnetic suction cup; 13. sampling tube; 14. liquid storage tank; 15. nozzle; 16. micro spray hole; 17. conveying channel; 18. liquid suction groove; 19. reflux channel; 20. verticality measuring device; 21. depth indicating device; 22. dial; 23. hanging hanger; 24. sphere; 25. bevel gear set; 26. depth indicator; 27. transmission shaft; 28. belt; 29. ​​hand-held hole; 30. spiral blade. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] Depend on Figure 1-6 The present invention comprises a handheld part, which comprises a handheld component 1, on which a rotating motor 2 is arranged, the output end of the rotating motor 2 passes through the handheld component 1 and is connected to a rotating shaft 3, a damper 4 is arranged between the rotating shaft 3 and the handheld component 1, the other end of the rotating shaft 3 is connected to a connecting component 5, the connecting component 5 has a hollow structure, and a sampling part is arranged at the bottom of the connecting component 5,

[0029] The sampling part includes a drill bit 9, which is arranged at the bottom of the connecting member 5. The drill bit 9 has a through cavity 11. The connecting member 5 is provided with an opening matching the through cavity 11. An electric telescopic rod 10 is arranged in the hollow structure. The electric telescopic rod 10 passes through the opening and is arranged in the through cavity 11. An electromagnetic suction cup 12 is arranged at the bottom of the electric telescopic rod 10. A sampling tube 13 is arranged at the bottom of the electromagnetic suction cup 12. The sampling tube 13 has a metal shell. The sampling tube 13 of different lengths can be replaced according to different sampling requirements. A cooling component is arranged in the hollow structure. An extension part is arranged on the handheld member 1. The extension part is arranged on both sides of the handheld member 1. The verticality measuring device 20 and the depth indicating device 21 are respectively arranged on the extension parts on both sides.

[0030] The connecting member 5 includes an upper plate 6, a lower plate 7 and a vertical rod 8. The upper plate 6 is connected to the rotating shaft 3. There are multiple vertical rods 8, and the multiple vertical rods 8 are evenly distributed between the upper plate 6 and the lower plate 7. The connection forms a hollow structure, which can reduce the overall weight of the device, ensure its stability, provide good supporting strength, and ensure that the electric telescopic rod 10 can be freely extended and retracted.

[0031] The cooling assembly includes a liquid storage tank 14, a nozzle 15 is arranged on the lower plate 7, and the nozzle 15 is connected to the liquid storage tank 14 through a delivery channel 17. The nozzle 15 is a hollow annular tube, and the nozzle 15 is sleeved on the outside of the electric telescopic rod 10. A plurality of micro-spray holes 16 are arranged at the bottom of the nozzle 15, and the plurality of micro-spray holes 16 are located at the upper part of the through cavity 11. A liquid suction groove 18 is arranged at the bottom of the through cavity 11, and the liquid suction groove 18 is connected to the liquid storage tank 14 through a reflux channel 19. A micro pump is arranged on the reflux channel 19. The annular nozzle 15 is installed on the outside of the electric telescopic rod 10, and can spray the coolant evenly to the drill bit 9, maintain the temperature of the drill bit 9, and avoid overheating. The coolant is recovered through the liquid suction groove 18 and sent back to the liquid storage tank 14 through the reflux channel 19, so as to ensure the closed-loop circulation of the system, save coolant, keep the drill bit 9 cooled during the drilling process, prevent the drill bit 9 from overheating, and extend the service life of the drill bit 9.

[0032] The liquid suction groove 18 is an annular groove with an annular opening in the center. The inner diameter of the annular opening is larger than the outer diameter of the sampling tube 13. The annular opening forms a wrapping structure around the sampling tube 13, so that the liquid suction groove 18 can tightly surround the sampling tube 13 to recover the coolant, avoid the sampling tube 13 from getting stuck, and make the recovery of the coolant smoother.

[0033] The verticality measuring device 20 includes a dial 22, a suspension hanger 23 is provided at the bottom of the dial 22 through the extension part, a sphere 24 is provided at the bottom of the suspension hanger 23, and the sphere 24 can rotate freely around the fixed point of the suspension hanger 23. The dial 22 has an indicator needle, and the indicator needle is connected to the sphere 24 through a connecting line. The swing of the sphere 24 drives the indicator needle to deviate, and it can monitor in real time whether the sampling device remains vertical. When the equipment deviates from vertical, the sphere 24 will swing, and the indicator needle will indicate the deviation angle, providing the operator with necessary feedback to help correct the verticality.

[0034] The depth indicating device 21 includes a bevel gear set 25, which includes a first bevel gear and a second bevel gear. The first bevel gear is sleeved on the rotating shaft 3, and the second bevel gear is meshed with the first bevel gear. A depth indicator 26 is provided on the extension portion, and a transmission shaft 27 is provided on the depth indicator 26. The transmission shaft 27 and the second bevel gear are connected by a belt 28. A counting mechanism is provided in the depth indicator 26. A reset button is provided on the depth indicating device 21. The bevel gear set 25 transmits the rotational motion on the rotating shaft 3 from the second bevel gear to the depth indicator 26. The belt 28 is used as a connected power transmission device to ensure smooth power transmission without slippage. The counting mechanism records the number of rotations or angles of the rotating shaft 3 to calculate the depth to which the drill bit 9 has drilled. The change depth D1 of the depth indicator 26 can be calculated by the following formula

[0035]

[0036] D1 is the depth displayed by the depth indicator, D2 is the depth of each rotation of the drill bit, n1 is the number of teeth on the first bevel gear, and n2 is the number of teeth on the second bevel gear. That is, each time the rotating shaft 3 rotates a certain angle, the depth indicator 26 can display the corresponding depth according to the proportional relationship of the gears.

[0037] A spiral blade 30 is provided on the drill bit 9. The spiral blade 30 has three layers. The gap between the three layers of spiral blades 30 gradually decreases. The three layers of spiral blades 30 are arranged layer by layer from the outside to the inside. The gradually decreasing gap can improve the cutting efficiency and reduce the sticking phenomenon. The outer spiral blade 30 is mainly responsible for the initial cutting work, while the inner spiral blade 30 further refines the cutting to make the drilling smoother.

[0038] A hand-holding hole 29 is provided on the hand-holding component 1, and an arc-shaped structure is provided on the hand-holding hole 29. The user can pass his fingers through the hand-holding hole 29 to hold the sampling device more firmly. The arc-shaped structure conforms to ergonomics, which can make the hand feel more comfortable and reduce the fatigue caused by long-term operation.

[0039] The end of the sampling tube 13 away from the electromagnetic suction cup 12 is fixed on the same horizontal plane as the bottom of the drill bit 9, ensuring the alignment between the drill bit 9 and the sampling tube 13, avoiding inaccurate sampling or deviation due to inconsistent angles during the sampling process, and avoiding operational difficulties caused by offset.

[0040] The liquid storage tank 14 is provided with a coolant, which is made of plant-based, natural mineral or biodegradable materials. It can not only effectively reduce the temperature of the drill bit 9 and prevent overheating, but also avoid the pollution problem of chemical substances in traditional coolants, which meets the requirements of environmental protection and sustainable development.

[0041] Working principle: When working, the user holds the hand-held component 1 and controls the rotation of the drill bit 9 through the rotating motor 2. The rotating motor 2 transmits the rotating power through the rotating shaft 3 to drive the connecting component 5 to rotate, and reduces the vibration through the damper 4, so that the transmission is more stable. The drill bit 9 under the connecting component 5 rotates and drills into the soil downward. If the drill bit 9 is idle, the depth indicator 21 generates a reading, and the reading is cleared by the zero button. The electric telescopic rod 10 runs through the connecting component 5 and absorbs the sampling tube 13 through the electromagnetic suction cup 12. The sampling tube 13 has a metal shell and is fixed under the adsorption of the electromagnetic suction cup 12. As the drill bit 9 The drill bit 9 rotates to drill into the soil, and the sampling tube 13 follows the drill bit 9 into the soil to collect soil samples on the path of the drill bit 9. The soil samples in the sampling tube 13 are pushed forward layer by layer as the drill bit 9 goes deeper. The bottom soil continuously pushes the upper soil layer, ensuring continuous sampling from the surface soil to the deep soil layer, and effectively collecting soil samples within the target depth range. The coolant flows from the liquid storage tank 14 to the periphery of the drill bit 9 through the nozzle 15 to reduce the wear of the drill bit 9 and keep the temperature of the drill bit 9 suitable to prevent overheating. When the drill bit 9 drills, the depth indicator 21 continuously monitors the drilling depth of the drill bit 9, and the bevel gear set 25 rotates to The rotation of the shaft 3 transmits motion to the depth indicator 26 and displays the actual drilling depth of the drill bit 9. The verticality measuring device 20 monitors in real time whether the drill bit 9 remains perpendicular to the ground, and senses the angle change through the free swing of the sphere 24. The deviation of the indicator needle indicates that the verticality has changed. The user can adjust the angle of the device according to the value on the dial 22 to ensure that the drill bit 9 penetrates vertically. When the drill bit 9 completes drilling to a certain depth, the soil sample in the sampling tube 13 is completely collected, and the rotating motor 2 is driven to reverse. During this process, the electromagnetic suction cup 12 maintains the adsorption force on the sampling tube 13 to ensure that the sample is not In case of damage or leakage, the drill bit 9 withdraws from the soil and leaves the drilling position, the electric telescopic rod 10 pushes the sampling tube 13 out of the drill bit 9, and the sampling process is completed. The electromagnetic suction cup 12 releases the lock on the sampling tube 13, and the staff retrieves the sampling tube 13 that has collected the sample and replaces it with a new sampling tube 13. The new sampling tube 13 is re-locked with the electromagnetic suction cup 12, and is ready to start the next sampling. Compared with traditional mechanized drilling equipment, it is small in size and light in weight, and users can easily carry and operate it. It can adapt to various on-site environments, especially in small spaces or complex terrains, and improves the reliability and accuracy of sampling data.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] 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 sampling device for building main body detection, characterized in that: Including the handheld part, The handheld part comprises a handheld component (1), a rotating motor (2) is arranged on the handheld component (1), an output end of the rotating motor (2) passes through the handheld component (1) and is connected to a rotating shaft (3), a damper (4) is arranged between the rotating shaft (3) and the handheld component (1), the other end of the rotating shaft (3) is connected to a connecting component (5), the connecting component (5) has a hollow structure, and a sampling portion is arranged at the bottom of the connecting component (5). The sampling part comprises a drill bit (9), the drill bit (9) is arranged at the bottom of the connecting member (5), the drill bit (9) has a through cavity (11), the connecting member (5) is provided with an opening matching the through cavity (11), an electric telescopic rod (10) is arranged in the hollow structure, the electric telescopic rod (10) penetrates the opening and is arranged in the through cavity (11), an electromagnetic suction cup (12) is arranged at the bottom of the electric telescopic rod (10), a sampling tube (13) is arranged at the bottom of the electromagnetic suction cup (12), the sampling tube (13) has a metal shell, a cooling component is arranged in the hollow structure, an extension part is arranged on the handheld member (1), the extension part is arranged on both sides of the handheld member (1), and a verticality measuring device (20) and a depth indicating device (21) are respectively arranged on the extension parts on both sides.

2. A sampling device for building main body detection according to claim 1, characterized in that: The connecting member (5) comprises an upper plate (6), a lower plate (7) and a vertical rod (8); the upper plate (6) is connected to the rotating shaft (3); there are a plurality of vertical rods (8); the plurality of vertical rods (8) are evenly distributed between the upper plate (6) and the lower plate (7) and connected to form a hollow structure.

3. A sampling device for building main body detection according to claim 2, characterized in that: The cooling assembly comprises a liquid storage tank (14). A nozzle (15) is arranged on the lower plate (7). The nozzle (15) is connected to the liquid storage tank (14) through a delivery channel (17). The nozzle (15) is a hollow annular tube. The nozzle (15) is sleeved on the outside of the electric telescopic rod (10). A plurality of micro-spray holes (16) are arranged at the bottom of the nozzle (15). The plurality of micro-spray holes (16) are located at the upper part of the through cavity (11). A liquid suction groove (18) is arranged at the bottom of the through cavity (11). The liquid suction groove (18) is connected to the liquid storage tank (14) through a reflux channel (19). A micro pump is arranged on the reflux channel (19).

4. A sampling device for building main body detection according to claim 3, characterized in that: The liquid absorption groove (18) is an annular groove, and the center of the liquid absorption groove (18) has an annular opening, the inner diameter of the annular opening is larger than the outer diameter of the sampling tube (13), and the annular opening surrounds the sampling tube (13) to form a wrapping structure.

5. A sampling device for building main body detection according to claim 4, characterized in that: The verticality measuring device (20) comprises a dial (22), a suspension hanger (23) is provided at the bottom of the dial (22) through the extension portion, a sphere (24) is provided at the bottom of the suspension hanger (23), the sphere (24) can rotate freely around the fixed point of the suspension hanger (23), the dial (22) has an indicator needle, the indicator needle is connected to the sphere (24) through a connecting line, and the swing of the sphere (24) drives the indicator needle to deviate.

6. A sampling device for building main body detection according to claim 5, characterized in that: The depth indicating device (21) comprises a bevel gear set (25), the bevel gear set (25) comprising a first bevel gear and a second bevel gear, the first bevel gear is sleeved on the rotating shaft (3), the second bevel gear and the first bevel gear are meshed with each other, a depth indicator (26) is arranged on the extension portion, a transmission shaft (27) is arranged on the depth indicator (26), the transmission shaft (27) and the second bevel gear are connected via a belt (28), and a counting mechanism is arranged in the depth indicator (26).

7. A sampling device for building main body detection according to claim 6, characterized in that: The drill bit (9) is provided with a spiral blade (30), the spiral blade (30) has three layers, the gaps between the three layers of spiral blades (30) gradually decrease, and the three layers of spiral blades (30) are arranged layer by layer from the outside to the inside.

8. A sampling device for building main body detection according to claim 7, characterized in that: The hand-held component (1) is provided with a hand-held hole (29), and the hand-held hole (29) is provided with an arc structure.

9. A sampling device for building main body detection according to claim 8, characterized in that: One end of the sampling tube (13) away from the electromagnetic chuck (12) is fixed on the same horizontal plane as the bottom of the drill bit (9).

10. A sampling device for building main body detection according to claim 9, characterized in that: The liquid storage tank (14) is provided with a cooling liquid, and the cooling liquid is made of plant-based, natural mineral or biodegradable material.

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