A concrete drilling powder detection device

Abstract

This invention relates to the field of concrete testing technology, specifically to a concrete core drilling and testing device. The device is used to drill core samples from concrete components. The device includes a drill cylinder, a drilling mechanism, and a cutting mechanism. The drill cylinder is rotatable along its own axis, with two ends designated as a first end and a second end. The drilling mechanism includes a drill bit and multiple grinding tool assemblies, with the drill bit positioned at the first end of the drill cylinder. Two rope grooves are formed on the peripheral wall of the drill cylinder, and a rope loop groove is formed on the peripheral wall of the first end. The cutting mechanism includes a tightening ring, a first rope saw, and a second rope saw. The tightening ring is rotatable and movable along the axial direction of the drill cylinder, fitted onto the second end of the drill cylinder. This invention provides a concrete core drilling and testing device that solves the problem of difficulty in core sample cutting during the core sampling process of existing core sampling machines.

Description

Technical Field

[0001] This invention relates to the field of concrete testing technology, and specifically to a concrete drilling powder testing device. Background Technology

[0002] Concrete core drilling testing involves drilling core samples from concrete members, grinding these samples into powder, and then conducting chemical analysis or physical experiments to obtain information about the cement, aggregates, admixtures, and other components within the concrete. This testing technique is commonly used to assess the quality, strength, and durability of concrete. For detecting corrosion in concrete, electrochemical methods are typically employed, measuring the potential difference in the reinforcing steel within the concrete to determine the degree of corrosion.

[0003] For example, Chinese patent application CN111198112A provides a sampling drill bit extraction device for a concrete core drilling machine. In the actual core drilling operation, due to the special nature of the drill bit and the variation of the core sample, when drilling core samples of different lengths, the cutting off of the root of the core sample is limited by space, making it difficult to cut off the core sample. Summary of the Invention

[0004] This invention provides a concrete drilling powder testing device to solve the problem that existing core sampling machines are prone to causing difficulties in core sample truncation during the core sampling process.

[0005] The present invention provides a concrete core sampling device for obtaining core samples from concrete components. The device includes a drill cylinder, a drilling mechanism, and a cutting mechanism. The drill cylinder is rotatable along its own axis, and its two ends are a first end and a second end. The drilling mechanism includes a drill bit and multiple grinding assemblies. The drill bit is located at the first end of the drill cylinder and is rotatable along the axis of the drill cylinder, and can also move axially along the drill cylinder. The two ends of the drill bit are a first end and a second end, and the first end of the drill bit and the first end of the drill cylinder are located at the same end. Multiple grinding assemblies are evenly distributed circumferentially along the drill cylinder, and each grinding assembly is rotatably located at the first end of the drill bit.

[0006] Two rope vertical grooves are formed on the peripheral wall of the drill barrel, extending along the axial direction of the drill barrel, and the two rope vertical grooves are symmetrical about the axis of the drill barrel. A rope ring groove is formed on the peripheral wall of the first end of the drill barrel, extending along the circumference of the drill barrel, and the rope ring groove is connected to the two rope vertical grooves.

[0007] The cutting mechanism includes a tightening ring, a first wire saw, and a second wire saw. The tightening ring is rotatably fitted onto the second end of the drill barrel, allowing it to move axially along the drill barrel. One end of the first wire saw is fixedly connected to the tightening ring, and the other end passes through a wire groove, around a half-circumference wire loop groove, and then through another wire groove before being fixedly connected to the tightening ring. One end of the second wire saw is fixedly connected to the tightening ring, and the other end passes through a wire groove, around another half-circumference wire loop groove, and then through another wire groove before being fixedly connected to the tightening ring. When the tightening ring moves axially away from the first end of the drill barrel, the first and second wire saws tighten, and the first and second wire saws within the wire loop grooves move towards the center of the wire loop grooves, thereby cutting off the root of the core sample.

[0008] Furthermore, the concrete drilling powder detection device also includes an adjustment mechanism, which includes a first clamping assembly. The first clamping assembly includes multiple first limiting blocks and multiple second limiting blocks. The first limiting blocks are fixedly disposed on the inner wall of the first end of the drill barrel. The multiple first limiting blocks are evenly distributed along the circumference of the drill barrel, and a first limiting groove is formed between two adjacent first limiting blocks. A stop block is fixedly disposed on the end of each first limiting block facing the first end of the drill barrel.

[0009] The second limiting block is fixedly mounted on the second end of the drill bit. Multiple second limiting blocks are evenly distributed circumferentially along the drill barrel, forming a second limiting groove between two adjacent blocks. The first limiting block is slidably mounted within the second limiting groove, and the second limiting block is slidably mounted within the first limiting groove. Each second limiting block has a retaining groove at its end facing the second end of the drill barrel; initially, the retaining block is positioned within the retaining groove.

[0010] Furthermore, the adjusting mechanism includes a second clamping assembly, which includes a plurality of first spring bars and a plurality of second spring bars. Each first spring bar is fixedly disposed within a first limiting groove and extends circumferentially along the drill barrel. Each second spring bar is fixedly disposed on the side of a second limiting block near the inner wall of the drill barrel and extends circumferentially along the drill barrel, and each second spring bar can contact a first spring bar.

[0011] Furthermore, a transmission sleeve is fixedly installed at the second end of the drill barrel, and the concrete drilling powder detection device also includes a drive mechanism, which includes a motor, and the output shaft of the motor is fixedly connected to the transmission sleeve.

[0012] Furthermore, a tightening sleeve is fixedly installed on the motor, and the tightening sleeve is fitted onto the transmission sleeve. The outer peripheral wall of the tightening sleeve is threaded, and the inner peripheral wall of the tightening ring is threaded. The tightening ring is fitted onto the tightening sleeve, and when the tightening ring is fitted onto the tightening sleeve, the tightening sleeve and the tightening ring are threadedly engaged. The tightening ring is magnetic; initially, the tightening sleeve and the tightening ring are out of contact, and the tightening sleeve is magnetically attracted to the second end of the drill barrel.

[0013] Furthermore, the drill bit includes an upper sleeve and a lower sleeve. The lower sleeve is located at the first end of the drill bit, and the upper sleeve is located at the second end of the drill bit. The upper sleeve and the lower sleeve are threaded together. The lower sleeve has multiple fan-shaped grooves at the end away from the upper sleeve. The multiple fan-shaped grooves are evenly distributed along the circumference of the drill barrel. The two straight groove walls of each fan-shaped groove are the first straight groove wall and the second straight groove wall. The first straight groove wall extends radially along the drill barrel.

[0014] The grinding assembly includes a sector plate, a drill bit, and a rotating shaft. The rotating shaft extends axially along the drill barrel, and one end of the rotating shaft is rotatably disposed within the sector groove. The sector plate is fixedly connected to the peripheral wall of the rotating shaft and extends axially along the rotating shaft. The drill bit is fixedly connected to the other end of the rotating shaft and has a first state and a second state.

[0015] When the drill bit is in the first state, the sector plate and the first straight groove wall abut against each other, and the drill bit extends radially along the drill barrel. The two ends of the drill bit are the inner end and the outer end. The inner end of the drill bit is inside the drill barrel, and the outer end of the drill bit is outside the drill barrel. When the drill bit is in the second state, the sector plate and the second straight groove wall abut against each other, and the drill bit rotates until the two ends of the drill bit are between the inner wall and the outer wall of the drill barrel.

[0016] Furthermore, the drill bit has different lengths on both sides of the rotating shaft, with the longer end closer to the outer wall of the lower sleeve and the shorter end closer to the inner wall of the lower sleeve.

[0017] Furthermore, the concrete drilling and testing device also includes a support frame. During operation, the support frame is vertically mounted on the concrete component, and the motor and drill barrel are mounted on the support frame in a way that allows them to move along the axial direction of the drill barrel.

[0018] Furthermore, a handle is slidably mounted on the support, and the motor is fixedly connected to the handle. Moving the handle causes the motor and the drill barrel to move along the axial direction of the drill barrel.

[0019] Furthermore, multiple rope clamp sets are fixed on the rope loop groove. The multiple rope clamp sets are evenly distributed along the circumference of the rope loop groove. Each rope clamp set includes two rope clamps, which are located at the first end of the rope loop groove near the drill bit and the first end away from the drill bit.

[0020] The beneficial effects of the present invention are as follows: The concrete drilling powder detection device of the present invention is provided with a drill bit that can rotate along the axis of the drill barrel and move along the axial direction of the drill barrel. During operation, the grinding tool assembly contacts the concrete component, so that the inner and outer walls of the drill barrel are not subjected to friction from the concrete during drilling.

[0021] Inside the drill barrel, a first and second wire saw with adjustable tension are installed. After drilling is completed, the first and second wire saws are tightened, and the first and second wire saws, located within the wire loop grooves, move towards the center of the grooves to cut off the root of the core sample. The operation is simple, the cutting effect is good, and the cut surface is clean. By setting the first and second wire saws to be subjected to balanced forces when cutting the core sample, the stability is strong. Furthermore, the intermittent forward and reverse rotation during core cutting ensures even wear on the wire saws, avoiding continuous wear and damage to the same location. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of a concrete drilling powder detection device provided in Embodiment 1 of the present invention;

[0024] Figure 2 This is an exploded view of a concrete drilling powder detection device provided in Embodiment 1 of the present invention;

[0025] Figure 3 This is a top view of a concrete drilling powder detection device provided in Embodiment 1 of the present invention;

[0026] Figure 4 for Figure 3 Sectional view at point AA;

[0027] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0028] Figure 6 This is a cross-sectional view of the drill barrel of a concrete drilling powder detection device provided in Embodiment 1 of the present invention;

[0029] Figure 7 for Figure 6 Enlarged view of point C in the middle;

[0030] Figure 8 A cross-sectional view of a drill bit for a concrete drilling powder detection device provided in Embodiment 1 of the present invention;

[0031] Figure 9 This is a schematic diagram of the drill bit structure of a concrete drilling powder detection device provided in Embodiment 1 of the present invention;

[0032] Figure 10 for Figure 9 Sectional view at point DD;

[0033] Figure 11 This is a schematic diagram of the structure of a grinding blade for a concrete drilling powder detection device provided in Embodiment 1 of the present invention;

[0034] Figure 12 This is a schematic diagram of the initial state of a concrete drilling powder detection device provided in Embodiment 1 of the present invention;

[0035] Figure 13 This is a schematic diagram of the drill bit rotating in a concrete drilling powder detection device according to Embodiment 1 of the present invention;

[0036] Figure 14 This is a schematic diagram of the drill bit of a concrete drilling powder detection device provided in Embodiment 1 of the present invention when the drill bit is in the second state.

[0037] Figure 15 This is a schematic diagram of the state of a concrete drilling powder detection device during sawing, as provided in Embodiment 1 of the present invention.

[0038] In the diagram: 100, bracket; 200, motor; 220, tightening sleeve; 230, handle; 300, drill barrel; 310, transmission sleeve; 320, rope loop groove; 321, rope clamp; 330, rope vertical groove; 340, first elastic bar; 350, first limiting block; 360, stop block; 400, drill bit; 410, upper sleeve; 411, second limiting block; 412, stop groove; 413, second elastic bar; 420, lower sleeve; 421, fan-shaped groove; 430, sharpening assembly; 431, fan-shaped plate; 432, drill bit; 433, rotating shaft; 500, cutting mechanism; 510, tightening ring; 520, first wire saw; 530, second wire saw. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below 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.

[0040] Embodiment 1 of a concrete drilling powder detection device of the present invention: Refer to Figures 1 to 15 As shown in this embodiment, a concrete core sample drilling and testing device is used to drill core samples from concrete components. The concrete core sample drilling and testing device includes a drill cylinder 300, a drilling mechanism, and a cutting mechanism 500. The drill cylinder 300 is rotatable along its own axis, and the two ends of the drill cylinder 300 are a first end and a second end.

[0041] The drilling mechanism includes a drill bit 400 and multiple grinding assemblies 430. The drill bit 400 is disposed at the first end of the drill barrel 300. The drill bit 400 is rotatable along the axis of the drill barrel 300 and is also movable along the axial direction of the drill barrel 300. The two ends of the drill bit 400 are the first end and the second end, and the first end of the drill bit 400 and the first end of the drill barrel 300 are located at the same end. The multiple grinding assemblies 430 are evenly distributed along the circumference of the drill barrel 300, and each grinding assembly 430 is rotatably disposed at the first end of the drill bit 400. During operation, the grinding assembly 430 contacts the concrete component.

[0042] Two rope vertical grooves 330 are formed on the peripheral wall of the drill barrel 300. The rope vertical grooves 330 extend along the axial direction of the drill barrel 300, and the two rope vertical grooves 330 are symmetrical about the axis of the drill barrel 300. A rope ring groove 320 is formed on the peripheral wall of the first end of the drill barrel 300. The rope ring groove 320 extends along the circumference of the drill barrel 300, and the rope ring groove 320 is connected to the two rope vertical grooves 330.

[0043] The cutting mechanism 500 includes a tightening ring 510, a first wire saw 520, and a second wire saw 530. The tightening ring 510 is rotatable and movable along the axial direction of the drill barrel 300, and is sleeved on the second end of the drill barrel 300. One end of the first wire saw 520 is fixedly connected to the tightening ring 510. The other end of the first wire saw 520 passes through a wire vertical groove 330, around a half-circumference wire loop groove 320, and then through another wire vertical groove 330 before being fixedly connected to the tightening ring 510. One end of the second wire saw 530 is fixedly connected to the tightening ring 510. The other end of the second wire saw 530 passes through a wire vertical groove 330, around another half-circumference wire loop groove 320, and then through another wire vertical groove 330 before being fixedly connected to the tightening ring 510. When the tightening ring 510 moves along the axial direction of the drill barrel 300 away from the first end of the drill barrel 300, the first wire saw 520 and the second wire saw 530 tighten, and the first wire saw 520 and the second wire saw 530, which are located in the wire ring groove 320, move toward the center of the wire ring groove 320, thereby cutting off the root of the core sample.

[0044] In this embodiment, the concrete drilling powder detection device further includes an adjustment mechanism, which includes a first clamping assembly. The first clamping assembly includes a plurality of first limiting blocks 350 and a plurality of second limiting blocks 411. The first limiting blocks 350 are fixedly disposed on the inner wall of the first end of the drill barrel 300. The plurality of first limiting blocks 350 are evenly distributed along the circumference of the drill barrel 300, and a first limiting groove is formed between two adjacent first limiting blocks 350. A stop block 360 is fixedly disposed on one end of each first limiting block 350 facing the first end of the drill barrel 300.

[0045] The second limiting block 411 is fixedly disposed at the second end of the drill bit 400. Multiple second limiting blocks 411 are evenly distributed along the circumference of the drill barrel 300, forming a second limiting groove between two adjacent second limiting blocks 411. The first limiting block 350 is slidably disposed within the second limiting groove, and the second limiting blocks 411 are slidably disposed within the first limiting groove. Each second limiting block 411 has a retaining groove 412 at one end facing the second end of the drill barrel 300. Initially, the retaining block 360 is located within the retaining groove 412. When the drill barrel 300 rotates in the forward direction, the retaining block 360 and the retaining groove 412 cause the drill barrel 300 to rotate synchronously with the drill bit 400. When the drill barrel 300 rotates in the reverse direction, the retaining block 360 gradually disengages from the retaining groove 412, causing relative movement between the drill barrel 300 and the drill bit 400.

[0046] In this embodiment, the adjustment mechanism includes a second clamping assembly, which includes a plurality of first spring bars 340 and a plurality of second spring bars 413. Each first spring bar 340 is fixedly disposed in a first limiting groove and extends circumferentially along the drill barrel 300. Each second spring bar 413 is fixedly disposed on the side of a second limiting block 411 near the inner wall of the drill barrel 300 and extends circumferentially along the drill barrel 300. Each second spring bar 413 can contact a first spring bar 340.

[0047] When each first limiting block 350 is aligned with a second limiting groove, and each second limiting block 411 is aligned with a first limiting groove, the drill barrel 300 is pressed further, causing it to continue moving towards the concrete component. When the end face of the first end of the drill barrel 300 is flush with the end face of the first end of the drill bit 400, the second spring bar 413 just passes over the first spring bar 340, meaning the distance from the center of the second spring bar 413 to the end face of the first end of the drill barrel 300 is greater than the distance from the center of the first spring bar 340 to the end face of the first end of the drill barrel 300. Then, the second spring bar 413 is bounced by the first spring bar 340 to the end face of the second spring bar 413 closest to the concrete component, and the end face of the first end of the drill bit 400 is inside the drill barrel 300, thus moving towards the second end of the drill barrel 300, exposing the rope loop groove 320.

[0048] In this embodiment, a transmission sleeve 310 is fixedly installed at the second end of the drill barrel 300. The concrete drilling powder detection device also includes a drive mechanism, which includes a motor 200. The output shaft of the motor 200 is fixedly connected to the transmission sleeve 310. When the motor 200 is started, the motor 200 drives the drill barrel 300 to rotate synchronously.

[0049] In this embodiment, a tightening sleeve 220 is fixedly mounted on the motor 200. The tightening sleeve 220 is fitted onto the transmission sleeve 310. The outer peripheral wall of the tightening sleeve 220 is threaded, and the inner peripheral wall of the tightening ring 510 is threaded. The tightening ring 510 is fitted onto the tightening sleeve 220. When the tightening ring 510 is fitted onto the tightening sleeve 220, the tightening sleeve 220 and the tightening ring 510 are threadedly engaged. The tightening ring 510 is magnetic. Initially, the tightening sleeve 220 and the tightening ring 510 are out of contact, and the tightening sleeve 220 and the second end of the drill barrel 300 are magnetically attracted. When the tightening ring 510 is fitted onto the tightening sleeve 220, the threaded engagement between the tightening sleeve 220 and the tightening ring 510 drives the drill barrel 300 to rotate. As the drill barrel 300 rotates, the tightening ring 510 gradually moves away from the first end of the drill barrel 300 along the tightening sleeve 220, and the first wire saw 520 and the second wire saw 530 gradually tighten. The first wire saw 520 and the second wire saw 530, located within the wire loop groove 320, move towards the center of the wire loop groove 320, thereby cutting off the root of the core sample. Thereafter, the rotation of the drill barrel 300 is intermittent, alternating forward and reverse, with a constant frequency, ensuring even wear on the first wire saw 520 and the second wire saw 530, preventing continuous increased wear at the same location until the core sample is cut off by the first wire saw 520 and the second wire saw 530.

[0050] In this embodiment, the drill bit 400 includes an upper sleeve 410 and a lower sleeve 420. The lower sleeve 420 is located at the first end of the drill bit 400, and the upper sleeve 410 is located at the second end of the drill bit 400. The upper sleeve 410 and the lower sleeve 420 are threaded together. The lower sleeve 420 has a plurality of fan-shaped grooves 421 at the end away from the upper sleeve 410. The plurality of fan-shaped grooves 421 are evenly distributed along the circumference of the drill barrel 300. The two straight groove walls of each fan-shaped groove 421 are a first straight groove wall and a second straight groove wall. The first straight groove wall extends radially along the drill barrel 300.

[0051] The grinding assembly 430 includes a sector plate 431, a drill bit 432, and a rotating shaft 433. The rotating shaft 433 extends axially along the drill barrel 300, and one end of the rotating shaft 433 is rotatably disposed within a sector groove 421. The sector plate 431 is fixedly connected to the peripheral wall of the rotating shaft 433 and extends axially along the rotating shaft 433. The drill bit 432 is fixedly connected to the other end of the rotating shaft 433 and has a first state and a second state.

[0052] When the drill bit 432 is in the first state, the sector plate 431 abuts against the first straight groove wall, and the drill bit 432 extends radially along the drill cylinder 300. The two ends of the drill bit 432 are the inner end and the outer end. The inner end of the drill bit 432 is located inside the drill cylinder 300, and the outer end of the drill bit 432 is located outside the drill cylinder 300. When the drill bit 432 is in the second state, the sector plate 431 abuts against the second straight groove wall, and the drill bit 432 rotates until its two ends are located between the inner and outer walls of the drill cylinder 300. This does not affect the movement of the drill bit 400 toward the second end of the drill cylinder 300, nor does it affect the extension of the first wire saw 520 and the second wire saw 530.

[0053] In this embodiment, the drill bit 432 has different lengths on both sides of the rotating shaft 433. The longer end is closer to the outer wall of the lower sleeve 420, and the shorter end is closer to the inner wall of the lower sleeve 420. Because the drill bit 432 has different lengths on both sides of the rotating shaft 433, when the drill barrel 300 and the drill bit 400 reverse, the grinding assembly 430 will automatically rotate because the drill bit 432 is in contact with the concrete component. The drill bit 432 will switch from the first state to the second state without affecting the retraction of the drill bit 400 and the extension of the first wire saw 520 and the second wire saw 530.

[0054] In this embodiment, the concrete drilling powder detection device also includes a support 100. During operation, the support 100 is vertically mounted on the concrete component, and the motor 200 and the drill barrel 300 are movably mounted on the support 100 along the axial direction of the drill barrel 300.

[0055] In this embodiment, a handle 230 is slidably mounted on the support 100, and a motor 200 is fixedly connected to the handle 230. Moving the handle 230 causes the motor 200 and the drill barrel 300 to move along the axial direction of the drill barrel 300. Manually pushing the handle 230 on the motor 200 pushes the drill barrel 300 forward at a uniform speed, thus initiating drilling into the concrete component.

[0056] In this embodiment, multiple rope clamp sets are fixed on the rope loop groove 320. The multiple rope clamp sets are evenly distributed along the circumference of the rope loop groove 320. Each rope clamp set includes two rope clamps 321, which are disposed at a first end of the rope loop groove 320 near the drill bit 400 and a first end away from the drill bit 400. The rope clamps 321 define the positions of the first wire saw 520 and the second wire saw 530, such that when the first wire saw 520 and the second wire saw 530 are not tightened, the first wire saw 520 and the second wire saw 530 are located within the rope loop groove 320.

[0057] Working process: In the initial state, the stop block 360 is in the stop groove 412, the tightening sleeve 220 and the tightening ring 510 are out of contact, and the tightening sleeve 220 and the second end of the drill barrel 300 are magnetically attracted, and the drill bit 432 is in the first state.

[0058] Then, motor 200 is started, driving drill barrel 300 to rotate in the forward direction. First, holes are drilled in the concrete component to be sampled for fixing support 100, then support 100 is fixed to the concrete component. Drill barrel 300 drives drill bit 400 to rotate synchronously, while simultaneously manually pushing handle 230 to feed drill barrel 300 at a uniform speed, beginning drilling into the concrete component. Forward direction is... Figure 12 The downward view of the drill barrel 300 shown is in the clockwise direction.

[0059] When drilling is complete, the drill barrel 300 is rotated in the opposite direction by a certain angle, causing relative movement between the drill barrel 300 and the drill bit 400, and changing their relative positions. Figure 14 In this state, each first limiting block 350 corresponds to a second limiting groove, and each second limiting block 411 corresponds to a first limiting groove. Then, the drill barrel 300 is pressed further, causing it to move towards the concrete component. When the end face of the first end of the drill barrel 300 is flush with the end face of the first end of the drill bit 400, the second elastic bar 413 just passes over the first elastic bar 340, meaning the distance from the center of the second elastic bar 413 to the end face of the first end of the drill barrel 300 is greater than the distance from the center of the first elastic bar 340 to the end face of the first end of the drill barrel 300. Then, the second elastic bar 413 is bounced by the first elastic bar 340 to the end face of the second elastic bar 413 closest to the concrete component, and the end face of the first end of the drill bit 400 is inside the drill barrel 300, thus moving towards the second end of the drill barrel 300, exposing the rope loop groove 320.

[0060] Next, the tightening ring 510 is fitted onto the tightening sleeve 220, at which point the tightening sleeve 220 and the tightening ring 510 are threadedly engaged. The drill barrel 300 is driven to rotate in the forward direction. As the drill barrel 300 rotates, the tightening ring 510 gradually moves away from the first end of the drill barrel 300 along the tightening sleeve 220, and the first wire saw 520 and the second wire saw 530 gradually tighten. The first wire saw 520 and the second wire saw 530, located within the wire loop groove 320, move towards the center of the wire loop groove 320 and begin sawing the root of the core sample, eventually cutting off the root of the core sample. Thereafter, the rotation of the drill barrel 300 is intermittent forward and reverse rotation at a constant frequency, ensuring that the damage to the first wire saw 520 and the second wire saw 530 is balanced, preventing continuous increased wear at the same location, until the core sample is cut off by the first wire saw 520 and the second wire saw 530.

[0061] Finally, the drill barrel 300 and the core sample were removed, the dust inside the drill barrel 300 was manually cleaned, and the drilling mechanism was reset. The core sample was then sent to a slitting machine and a grinding mill to facilitate chemical or physical analysis of its composition and properties at different thicknesses. Subsequently, the borehole was cleaned, electrical wires were laid, and electrochemical methods were used to detect corrosion of the reinforcing steel in the concrete, thereby determining the degree of corrosion of the reinforcing steel in the concrete.

[0062] Because the drill bit 432 has different lengths on both sides of the rotating shaft 433, when the drill barrel 300 and the drill bit 400 are reversed, the drill bit 432 abuts against the concrete component, and the grinding assembly 430 will automatically rotate. The drill bit 432 will switch from the first state to the second state, and the fan-shaped plate 431 will abut against the second straight groove wall. The drill bit 432 will rotate until both ends of the drill bit 432 are between the inner and outer walls of the drill barrel 300. This will not affect the movement of the drill bit 400 toward the second end of the drill barrel 300, nor will it affect the extension of the first wire saw 520 and the second wire saw 530.

[0063] In another embodiment of the concrete drilling and powder detection device of the present invention, the difference from the above embodiment is that: an electrically controlled telescopic rod is provided on the bracket 100, and the extended end of the electrically controlled telescopic rod is fixedly connected to the handle 230. When the electrically controlled telescopic rod is activated, the electrically controlled telescopic rod drives the handle 230, the motor 200 and the drill cylinder 300 to move along the axial direction of the drill cylinder 300 toward the concrete component.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A concrete core sampling device for detecting concrete core samples, characterized in that: The system includes a drill barrel, a drilling mechanism, and a cutting mechanism. The drill barrel is rotatable along its own axis, and its two ends are designated as a first end and a second end. The drilling mechanism includes a drill bit and multiple grinding assemblies. The drill bit is located at the first end of the drill barrel and is rotatable along the axis of the drill barrel. The drill bit is also rotatable along the axial direction of the drill barrel. Its two ends are designated as a first end and a second end, and the first end of the drill bit and the first end of the drill barrel are located at the same end. Multiple grinding assemblies are evenly distributed around the circumference of the drill barrel, and each grinding assembly is rotatably located at the first end of the drill bit. Two rope vertical grooves are formed on the peripheral wall of the drill barrel, which extend along the axial direction of the drill barrel and are symmetrical about the axis of the drill barrel. A rope ring groove is formed on the peripheral wall of the first end of the drill barrel, which extends along the circumference of the drill barrel and is connected to the two rope vertical grooves. The cutting mechanism includes a tightening ring, a first wire saw, and a second wire saw. The tightening ring is rotatably and movable along the axial direction of the drill barrel, fitted onto the second end of the drill barrel. One end of the first wire saw is fixedly connected to the tightening ring, and the other end of the first wire saw passes through a vertical wire groove, around a half-circumference wire loop groove, and then through another vertical wire groove before being fixedly connected to the tightening ring. One end of the second wire saw is fixedly connected to the tightening ring, and the other end of the second wire saw passes through a vertical wire groove, around another half-circumference wire loop groove, and then through another vertical wire groove before being fixedly connected to the tightening ring. When the tightening ring moves along the axial direction of the drill barrel away from the first end of the drill barrel, the first and second wire saws tighten, and the first and second wire saws located in the wire loop grooves move towards the center of the wire loop grooves, thereby cutting off the root of the core sample. The drill bit includes an upper sleeve and a lower sleeve. The lower sleeve is located at the first end of the drill bit, and the upper sleeve is located at the second end of the drill bit. The upper sleeve and the lower sleeve are threaded together. The lower sleeve has multiple fan-shaped grooves at the end away from the upper sleeve. The multiple fan-shaped grooves are evenly distributed along the circumference of the drill barrel. The two straight groove walls of each fan-shaped groove are the first straight groove wall and the second straight groove wall. The first straight groove wall extends along the radial direction of the drill barrel. The grinding assembly includes a sector plate, a drill bit, and a rotating shaft; the rotating shaft extends axially along the drill cylinder, and one end of the rotating shaft is rotatably disposed in the sector groove; the sector plate is fixedly connected to the peripheral wall of the rotating shaft, and the sector plate extends axially along the rotating shaft; the drill bit is fixedly connected to the other end of the rotating shaft, and the drill bit has a first state and a second state. When the drill bit is in the first state, the sector plate and the first straight groove wall abut against each other, and the drill bit extends radially along the drill barrel. The two ends of the drill bit are the inner end and the outer end. The inner end of the drill bit is inside the drill barrel, and the outer end of the drill bit is outside the drill barrel. When the drill bit is in the second state, the sector plate and the second straight groove wall abut against each other, and the drill bit rotates until the two ends of the drill bit are between the inner wall and the outer wall of the drill barrel.

2. The concrete drilling powder detection device according to claim 1, characterized in that: The concrete drilling powder detection device also includes an adjustment mechanism, which includes a first clamping component, which includes multiple first limiting blocks and multiple second limiting blocks; the first limiting blocks are fixedly disposed on the inner wall of the first end of the drill barrel, the multiple first limiting blocks are evenly distributed along the circumference of the drill barrel, and a first limiting groove is formed between two adjacent first limiting blocks; a stop block is fixedly disposed on the end of each first limiting block facing the first end of the drill barrel; The second limiting block is fixedly installed at the second end of the drill bit. Multiple second limiting blocks are evenly distributed along the circumference of the drill barrel, and a second limiting groove is formed between two adjacent second limiting blocks. The first limiting block is slidably installed in the second limiting groove, and the second limiting block is slidably installed in the first limiting groove. Each second limiting block has a retaining groove at one end facing the second end of the drill barrel. In the initial state, the retaining block is in the retaining groove.

3. The concrete drilling powder detection device according to claim 2, characterized in that: The adjustment mechanism includes a second clamping assembly, which includes multiple first spring bars and multiple second spring bars; each first spring bar is fixedly disposed in a first limiting groove and extends along the circumference of the drill barrel; each second spring bar is fixedly disposed on the side of a second limiting block near the inner wall of the drill barrel and extends along the circumference of the drill barrel, and each second spring bar can contact a first spring bar.

4. The concrete drilling powder detection device according to claim 1, characterized in that: A transmission sleeve is fixedly installed at the second end of the drill barrel. The concrete drilling powder detection device also includes a drive mechanism, which includes a motor, and the output shaft of the motor is fixedly connected to the transmission sleeve.

5. A concrete drilling powder detection device according to claim 4, characterized in that: A tightening sleeve is fixedly installed on the motor and is fitted onto the transmission sleeve. The outer peripheral wall of the tightening sleeve is threaded, and the inner peripheral wall of the tightening ring is threaded. The tightening ring is used to fit onto the tightening sleeve. When the tightening ring is fitted onto the tightening sleeve, the tightening sleeve and the tightening ring are threadedly engaged. The tightening ring is magnetic. In the initial state, the tightening sleeve and the tightening ring are out of contact, and the tightening sleeve and the second end of the drill barrel are magnetically attracted.

6. The concrete drilling powder detection device according to claim 1, characterized in that: The drill bit has different lengths on both sides of the rotating shaft. The longer end is closer to the outer wall of the lower sleeve, and the shorter end is closer to the inner wall of the lower sleeve.

7. A concrete drilling powder detection device according to claim 1, characterized in that: The concrete drilling and testing device also includes a support frame. During operation, the support frame is vertically mounted on the concrete component, and the motor and drill barrel are mounted on the support frame in a way that allows them to move along the axial direction of the drill barrel.

8. A concrete drilling powder detection device according to claim 7, characterized in that: A handle is slidably mounted on the bracket, and the motor is fixedly connected to the handle. Moving the handle causes the motor and the drill barrel to move along the axial direction of the drill barrel.

9. A concrete drilling powder detection device according to claim 1, characterized in that: Multiple rope clamp sets are fixed on the rope loop groove. The multiple rope clamp sets are evenly distributed along the circumference of the rope loop groove. Each rope clamp set includes two rope clamps, which are located at the first end of the rope loop groove near the drill bit and the first end away from the drill bit.

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