A building concrete damage detection device based on Internet of Things technology

Abstract

The present invention discloses a building concrete damage detection device based on Internet of Things technology, specifically related to the field of concrete detection, which includes two symmetrically arranged fixture bodies. Two clamping rods are installed on one side of the fixture body. A clamping plate is fixed at the end of the clamping rod away from the fixture body, and a concrete sample block is clamped between the two clamping plates. A damage detection mechanism and a drilling mechanism are arranged between the two fixture bodies. The damage detection mechanism is used to take images of the top surface of the concrete sample block, and based on the comparison between the image content and the preset damage information, obtain the damage information on the surface of the inspected concrete sample block. The preset damage information includes depressions, protrusions and cracks on the surface of the concrete sample block. The drilling mechanism is used to drill holes in the top of the concrete sample block clamped by the clamping plate. The present invention sequentially detects the damage states of the four surfaces of the concrete sample block with the second axis as the axis through the damage detection mechanism, improving the diversity and comprehensiveness of the damage information detection of the concrete sample block by this device.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete damage, and more specifically, the present invention relates to a building concrete damage detection device based on Internet of Things technology. Background Art

[0002] The Internet of Things refers to a technology that can collect real-time information of any object or process that needs to be monitored, connected, and interacted with through various information sensors, radio frequency identification technologies, global positioning systems, infrared sensors, laser scanners, etc. The information collected includes sound, light, heat, electricity, mechanics, chemistry, biology, location, and other various required information. Through various possible network accesses, it realizes the ubiquitous connection between things and things, and between things and people, and realizes the intelligent perception, identification, and management of items and processes. The Internet of Things is an information carrier based on the Internet, traditional telecommunications networks, etc., which enables all ordinary physical objects that can be independently addressed to form an interconnected network.

[0003] Before the building concrete products are put into use, it is necessary to detect the damage of concrete specimens. The existing detection methods often detect the surface of the concrete specimens through images. However, due to the fixed position of the detection mechanism, only the damage on the local surface of the specimens can be detected, the detection range is small, and the results are inaccurate. Summary of the Invention

[0004] The problem to be solved by the building concrete damage detection device based on Internet of Things technology provided by the present invention is that the existing damage detection devices can only detect the damage on the local surface of the specimens, the detection range is small, and the results are inaccurate.

[0005] To achieve the above object, the present invention provides the following technical solution: A building concrete damage detection device based on Internet of Things technology includes two symmetrically arranged fixture bodies. On one side of each fixture body, two clamping rods with adjustable vertical spacing are installed. At the end of each clamping rod away from the fixture body, a clamping plate is fixed. The two clamping plates move synchronously and in opposite directions, and a concrete specimen is clamped between the two clamping plates. Between the two fixture bodies, there are a damage detection mechanism and a drilling mechanism. The damage detection mechanism is used to take images of the top surface of the concrete specimen and compare the image content with the preset damage information to obtain the damage information on the surface of the tested concrete specimen. The preset damage information includes depressions, protrusions, and cracks on the surface of the concrete specimen. The drilling mechanism is used to drill holes in the top of the concrete specimen clamped by the clamping plates.

[0006] A spherical grooved wheel mechanism is provided on the back side of the fixture body. The spherical grooved wheel mechanism includes a first shaft which is fixedly connected to the fixture body, and the first shaft is coaxially arranged with the symmetry axis of the two clamping rods. A spherical grooved wheel is fixedly installed at the end of the first shaft far away from the fixture body. The spherical grooved wheel mechanism further includes a second shaft perpendicular to the first shaft in the horizontal plane. A dial rod is fixedly connected to the end of the second shaft close to the spherical grooved wheel. The dial rod is adapted to the spherical grooved wheel, and the second shaft rotates to drive the fixture body to rotate intermittently.

[0007] In a preferred embodiment, a vertical guide hole is formed on one side of the fixture body. Two symmetrical sliders are slidably arranged inside the guide hole. The two clamping rods are respectively fixed to the two sliders, and racks are fixedly installed on both sliders. A central gear is rotatably connected at the central position on one side of the fixture body. Both racks are meshed with the central gear, and the two racks are centrally symmetrically arranged about the center of the central gear. A driving cylinder is installed on the side surface of the fixture body, and the output shaft of the driving cylinder is fixedly connected to one of the sliders.

[0008] In a preferred embodiment, a torque adjusting mechanism is installed on one side of the fixture body between the two clamping rods. A force arm output mechanism is further provided on the side of the torque adjusting mechanism close to the concrete sample block. The force arm output mechanism includes a first rack and a second rack arranged crosswise, and arc-shaped rods are fixedly connected to the output ends of the first rack and the second rack. The two arc-shaped rods respectively correspond to the front and rear sides of the concrete sample block. When the two clamping plates loosen the concrete sample block, the torque adjusting mechanism drives the arc-shaped rods on the left and right fixture bodies to push the concrete sample block to deflect around its vertical central axis in the same direction.

[0009] In a preferred embodiment, the torque adjusting mechanism includes an installation box. An upper gear and a lower gear are rotatably arranged inside the installation box, and the upper gear and the lower gear are vertically coaxially distributed. A sleeve is fixedly connected to the center of the top of the upper gear and the center of the bottom of the lower gear. A piston rod is movably arranged at the end of the sleeve outside the installation box. The end of the piston rod far away from the sleeve is always in sliding contact with the clamping rod. A spiral groove is arranged inside the sleeve, and a convex block adapted to the spiral groove is arranged at the end of the piston rod inside the sleeve. When the two clamping rods approach or move away from each other, the rotation directions of the upper gear and the lower gear are opposite. The first rack and the second rack both slide through the side surface of the installation box, and the first rack is meshed with the upper gear, and the second rack is meshed with the lower gear;

[0010] The torque adjusting mechanism further includes a driving member. The fixed end of the driving member is hinged to the fixture body, and the output end of the driving member is hinged to the back side of the installation box.

[0011] In a preferred embodiment, a first spring is sleeved on the rod wall of the piston rod, and the two ends of the first spring are respectively in pressing contact with the sleeve and the clamping rod.

[0012] In a preferred embodiment, positioning shafts are provided on both outer sides at the intersection of the first rack and the second rack. Guide rods are movably installed at both the upper and lower ends of the positioning shafts. The guide rods movably penetrate through the clamping rods, and a second spring is sleeved on the rod wall of the guide rods.

[0013] In a preferred embodiment, a locking shaft mechanism is sleeved on the shaft wall of the first shaft. The locking shaft mechanism includes a plurality of centripetally arranged limiting rods, and convex edges are provided at the ends of the limiting rods.

[0014] In a preferred embodiment, an axially extending groove is provided on the surface of the shaft wall of the first shaft, and the groove is adapted to the convex edge.

[0015] In a preferred embodiment, a U-shaped plate is fixedly installed on the back side of the fixture body, and the back side of the U-shaped plate is fixedly connected to the end of the first shaft away from the spherical grooved pulley.

[0016] In a preferred embodiment, the rotation period of the spherical grooved pulley mechanism is 90 degrees.

[0017] Technical effects and advantages of the present invention:

[0018] 1. In the present invention, the damage detection mechanism compares the surface image of the concrete sample block with the preset damage information to obtain the state information of the top surface of the concrete sample block after drilling. Finally, the second shaft is driven to rotate. Under the cooperation of the dial rod and the spherical grooved pulley, the first shaft drives the entire fixture body and the concrete sample block to intermittently rotate around the axis of the second shaft, so that the damage detection mechanism sequentially detects the damage states of the four surfaces of the concrete sample block with the second shaft as the axis, improving the diversity and comprehensiveness of the damage information detection of the concrete sample block by the present device;

[0019] 2. In the present invention, by pushing the concrete sample block to deflect symmetrically twice in the reverse direction, the area completely covered by the clamping plate is effectively exposed again, and the left and right sides that could not be detected originally are comprehensively and fully detected, greatly improving the accuracy of the damage detection structure of the present device. Moreover, the inclined and rotating concrete sample block can facilitate the damage detection mechanism to more accurately find the damage position and situation. Description of the drawings

[0020] Figure 1 is a front view structural diagram of the detection device of the present invention;

[0021] Figure 2 is a top view structural diagram of the detection device of the present invention;

[0022] Figure 3 is a front view structural diagram of the detection device of the present invention for detecting the cross-section of a concrete sample block;

[0023] Figure 4 is a schematic diagram of the structure of the fixture body of the detection device of the present invention;

[0024] Figure 5 For the present invention Figure 1 is an enlarged schematic view of the structure at position A in the present invention;

[0025] Figure 6 is a top view structural schematic diagram of the force arm output mechanism of the present invention;

[0026] Figure 7 is a cross-sectional schematic diagram of the cooperation between the lock shaft mechanism and the first shaft of the present invention.

[0027] The reference numerals are: 1, fixture main body; 11, clamping rod; 12, clamping plate; 13, U-shaped plate; 14, driving cylinder; 15, guiding hole; 16, central gear; 17, slider; 18, rack; 2, damage detection mechanism; 3, drilling mechanism; 4, torque adjustment mechanism; 40, driving member; 41, mounting box; 42, upper gear; 43, lower gear; 44, sleeve; 441, spiral groove; 45, piston rod; 5, force arm output mechanism; 51, first rack; 52, second rack; 53, arc rod; 6, spherical grooved wheel mechanism; 61, first shaft; 62, spherical grooved wheel; 63, second shaft; 64, lever; 7, positioning shaft; 71, guiding rod; 8, lock shaft mechanism. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a 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 those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Embodiment 1

[0030] Referring to the accompanying specification Figure 1 , a building concrete damage detection device based on Internet of Things technology includes two symmetrically arranged fixture main bodies 1. On one side of the fixture main body 1, two clamping rods 11 with adjustable vertical spacing are installed. The end of the clamping rod 11 away from the fixture main body 1 is fixed with a clamping plate 12. The two clamping plates 12 move synchronously and in opposite directions, and a concrete sample block is clamped between the two clamping plates 12. A damage detection mechanism 2 and a drilling mechanism 3 are arranged between the two fixture main bodies 1. The damage detection mechanism 2 is used to photograph the top surface image of the concrete sample block and compare it with the preset damage information based on the image content to obtain the damage information on the surface of the inspected concrete sample block. The preset damage information includes depressions, protrusions, and cracks on the surface of the concrete sample block. The drilling mechanism 3 is used to drill holes in the top of the concrete sample block clamped by the clamping plate 12;

[0031] On the back side of the fixture body 1, a spherical grooved wheel mechanism 6 is provided. The spherical grooved wheel mechanism 6 includes a first shaft 61. The first shaft 61 is fixedly connected to the fixture body 1, and the first shaft 61 is coaxially arranged with the symmetry axis of the two clamping rods 11. A spherical grooved wheel 62 is fixedly installed at the end of the first shaft 61 away from the fixture body 1. The spherical grooved wheel mechanism 6 further includes a second shaft 63 perpendicular to the first shaft 61 in the horizontal plane. A dial rod 64 is fixedly connected to the end of the second shaft 63 close to the spherical grooved wheel 62. The dial rod 64 is adapted to the spherical grooved wheel 62, and the second shaft 63 rotates to drive the fixture body 1 to rotate intermittently;

[0032] It should be noted that the two clamping plates 12 can be driven by a double-acting cylinder to make the two clamping plates 12 move synchronously and in opposite directions to clamp the concrete sample block. All the sample blocks detected in the present invention are square sample blocks; the damage detection mechanism 2 includes a camera unit, a processing unit, and an output unit. The camera unit takes images, and the processing unit compares the taken images with the damage preset information (or images), and outputs the surface damage state of the detected concrete sample block based on the comparison result. The damage state includes two states: non-damaged state and damaged state. The tester judges the performance of this batch of concrete products based on the damage state of the concrete sample block.

[0033] In this embodiment, the implementation scenario is specifically as follows: Control the two clamping plates 12 of the two fixture bodies 1 to clamp the two sides of the top and bottom of the concrete sample block to be detected, presenting a state as shown in Figure 1 the figure. Then control the drilling mechanism 3 to drill a through hole in the top surface of the clamped concrete sample block. Next, the camera unit in the damage detection mechanism 2 takes a top surface image of the concrete sample block, and the processing unit compares the taken top surface image with the damage preset information (or images), and outputs the damage result of the top surface of the sample block to obtain the state information of the top surface of the concrete sample block after drilling. Finally, drive the second shaft 63 to rotate. Under the cooperation of the dial rod 64 and the spherical grooved wheel 62, the first shaft 61 drives the entire fixture body 1 and the concrete sample block to rotate intermittently around the axis of the second shaft 63, so that the damage detection mechanism 2 sequentially detects the damage states of the four surfaces of the concrete sample block with the second shaft 63 as the axis, improving the diversity and comprehensiveness of the damage information detection of the concrete sample block by this device.

[0034] Embodiment 2

[0035] Based on the above Embodiment 1, and referring to the accompanying drawings of the specification Figures 1 - 7, a vertical guide hole 15 is provided on one side of the fixture body 1. Two symmetrical sliders 17 are slidably arranged inside the guide hole 15. Two clamping rods 11 are respectively fixed to the two sliders 17, and racks 18 are fixedly installed on both sliders 17. A central gear 16 is rotatably connected to the center position of one side of the fixture body 1. Both racks 18 are meshed with the central gear 16, and the two racks 18 are centrally symmetrically arranged about the center of the central gear 16. A driving cylinder 14 is installed on the side of the fixture body 1, and the output shaft of the driving cylinder 14 is fixedly connected to one of the sliders 17;

[0036] It should be noted that when the driving cylinder 14 contracts, it drives the slider 17 connected to its output shaft to slide along the guide hole 15. At the same time, the rack 18 on this slider 17 moves vertically. The active rack 18 meshes with the central gear 16 and drives it to rotate. The central gear 16 then cooperates with the other rack 18 to make it move in the direction opposite to the movement of the active rack 18, so that the two clamping plates 12 approach each other and clamp the concrete sample; similarly, when the driving cylinder 14 extends, the two clamping plates 12 move away from each other, and the concrete sample is released by the clamping plates 12. Under the action of gravity, the concrete sample will be placed on the lower clamping plate 12.

[0037] A torque adjustment mechanism 4 is installed on one side of the fixture body 1 between the two clamping rods 11. A force arm output mechanism 5 is also provided on the side of the torque adjustment mechanism 4 close to the concrete sample. The force arm output mechanism 5 includes a first rack 51 and a second rack 52 arranged in a cross shape, and arc-shaped rods 53 are fixedly connected to the output ends of both the first rack 51 and the second rack 52. The two arc-shaped rods 53 respectively correspond to the front and rear sides of the concrete sample. When the two clamping plates 12 release the concrete sample, the torque adjustment mechanism 4 drives the arc-shaped rods 53 on the left and right fixture bodies 1 to push the concrete sample to deflect around its vertical central axis in the same direction (as Figure 2 shown);

[0038] It should be noted that strip-shaped holes are provided on the rod walls at the intersection of the first rack 51 and the second rack 52 along their rod directions. Moving blocks are arranged in both strip-shaped holes, and the two moving blocks are coaxially arranged. However, the first rack 51 and the second rack 52 are arranged one above the other. After the two clamping plates 12 release the concrete sample, the concrete sample falls on the lower clamping plate 12. The first rack 51 or the second rack 52 pushes the concrete sample to deflect around its vertical central axis, so that part of the part originally covered by the clamping plates 12 falls out. At the same time, the left and right sides of the concrete sample are inclined at a certain angle. After adjustment, then control the two clamping plates 12 to clamp the concrete sample.

[0039] The torque adjustment mechanism 4 includes an installation box 41. Inside the installation box 41, a same upper gear 42 and a lower gear 43 are rotatably provided, and the upper gear 42 and the lower gear 43 are vertically coaxially distributed. A sleeve 44 is fixedly connected to the center of the top of the upper gear 42 and the center of the bottom of the lower gear 43. A piston rod 45 is movably provided at the end of the sleeve 44 outside the installation box 41. The end of the piston rod 45 away from the sleeve 44 is always in sliding contact with the clamping rod 11. A spiral groove 441 is provided inside the sleeve 44. A convex block adapted to the spiral groove 441 is provided at the end of the piston rod 45 located inside the sleeve 44. When the two clamping rods 11 approach or move away from each other, the rotation directions of the upper gear 42 and the lower gear 43 are opposite. The first rack 51 and the second rack 52 both slide through the side surface of the installation box 41, and the first rack 51 meshes with the upper gear 42, and the second rack 52 meshes with the lower gear 43;

[0040] The torque adjustment mechanism 4 further includes a driving member 40. The fixed end of the driving member 40 is hinged to the fixture main body 1, and the output end of the driving member 40 is hinged to the back side of the installation box 41; the driving member 40 is a cylinder or a hydraulic cylinder;

[0041] A first spring is sleeved on the rod wall of the piston rod 45, and the two ends of the first spring are respectively in pressing contact with the sleeve 44 and the clamping rod 11;

[0042] It should be noted that the piston rod 45 is restricted to move only vertically. When the two clamping plates 12 move towards each other to clamp the concrete sample block, the clamping rod 11 compresses the piston rod 45, and the convex block at its end cooperates with the spiral groove 441 to rotate the sleeve 44, thereby driving the upper gear 42 or the lower gear 43 to rotate. For example, when driving the upper gear 42 to rotate clockwise, the first rack 51 is driven to extend, and the lower gear 43 rotates counterclockwise, driving the second rack 52 to also extend, and the first rack 51 and the second rack 52 both extend the same length;

[0043] And when the distance that the two clamping plates 12 move towards each other is longer, the lengths that the first rack 51 and the second rack 52 extend are longer, and the lever arms of the racks with the movable block as the fulcrum are longer, and it also shows that the thickness of the concrete sample block is thin, and vice versa, the thickness of the concrete sample block is thick. When the density is the same and the length is the same, the thicker the concrete sample block, the heavier it is, and the greater the frictional force.

[0044] Positioning shafts 7 are provided on both outer sides at the intersection position of the first rack 51 and the second rack 52 (as Figure 6 shown) for restricting the movement positions of the first rack 51 and the second rack 52. Guide rods 71 are movably installed at the upper and lower ends of the positioning shaft 7. The guide rods 71 movably penetrate through the clamping rod 11, and a second spring is sleeved on the rod wall of the guide rods 71.

[0045] In this embodiment, the implementation scenario is specifically as follows: After the damage detection mechanism 2 has successively detected the damage states of the four surfaces of the concrete sample block, when the clamping plates 12 of the clamp body 1 are horizontal, first loosen the two clamping plates 12. The concrete sample block falls onto the lower clamping plate 12 under the action of gravity. Then, control the driving member 40 to push the first rack 51 or the second rack 52 with the perpendicular bisector of the midpoint of the connection line of the two positioning shafts 7 as the fulcrum, so that the arc-shaped rod 53 lever-presses the concrete sample block to deflect counterclockwise or clockwise by a certain angle. At the same time, the arc-shaped rod 53 on the other clamp body 1 also pushes the other side of the concrete sample block to deflect in the same rotation direction, so that the concrete sample block rotates around its vertical central axis. After the deflection is completed, control the clamping plates 12 to clamp the concrete sample block;

[0046] Then drive the second shaft 63 to rotate. Under the cooperation of the dial rod 64 and the spherical grooved wheel 62, the first shaft 61 drives the entire clamp body 1 and the concrete sample block to rotate intermittently around the axis of the second shaft 63, so that the damage detection mechanism 2 successively detects the damage states of the surfaces of the deflected concrete sample block. For the deflected concrete sample block, during the rotation around the first shaft 61, the damage detection mechanism 2 can not only detect the area where the original clamping plate 12 covers the concrete sample block, but also detect the left and right side surfaces of the concrete sample block. Moreover, for the deflected concrete sample block, when rotating around the first shaft 61, the concave and convex damage defects on its surface can be detected more accurately;

[0047] Finally, the driving member 40 moves in the reverse direction until the concrete sample block deflects to a state symmetrical to the previous deflection. Repeat the detection process of the damage detection mechanism 2 after the deflection of the concrete sample block above to complete the damage detection of the entire surface of the concrete sample block. In this embodiment, the arc-shaped rod 53 pushes the concrete sample block to deflect symmetrically in the reverse direction twice, effectively exposing the area completely covered by the clamping plate 12 again, and comprehensively and fully detecting the left and right sides that could not be detected originally, greatly improving the accuracy of the damage detection structure of this device. And the inclined and rotating concrete sample block can facilitate the damage detection mechanism 2 to more accurately find the damage position and situation;

[0048] On the other hand, the two clamping plates 12 clamp concrete samples of different thicknesses. By setting the torque adjustment mechanism 4, before the clamping plates 12 clamp the concrete sample, the two clamping rods 11 move toward each other, and the clamping rod 11 compresses the piston rod 45, so that the upper gear 42 and the lower gear 43 rotate in opposite directions; when the distance of the two clamping plates 12 moving toward each other is longer, the toothed rod 1 51 and the toothed rod 2 52 are extended longer, and the resistance arm of the toothed rod when the movable block is used as the fulcrum is longer. According to the lever principle, the thinner the thickness of the concrete sample, the lighter the concrete sample, the smaller the force required, and the smaller the force required. In other words, when the present application detects thicker concrete samples, the thicker the concrete sample, the heavier it is, and the greater the force required to be pushed by the arc rod 53. At this time, the distance that the two clamps 12 of the present application move toward each other is short, and the extended lengths of the gear rod 1 51 and the gear rod 2 52 are also short. In other words, at this time, the resistance arm of the gear rod with the movable block as the fulcrum is short. When the input force is the same, the shorter the resistance arm, the greater the thrust that the arc rod 53 can provide, which is beneficial for the concrete sample to complete the angle deflection on the clamp 12, improves the adjustment efficiency, and increases the scope of application of the present application.

[0049] Example 3

[0050] Based on Example 1 or Example 2, and referring to the attached Figure 3 and Figure 7 A shaft locking mechanism 8 is mounted on the shaft wall of the first shaft 61. The shaft locking mechanism 8 includes a plurality of centripetally arranged limiting rods, and convex edges are arranged at the ends of the limiting rods.

[0051] A groove is provided on the wall surface of the first shaft 61 along the axial direction, and the groove is matched with the convex ridge.

[0052] A U-shaped plate 13 is fixedly mounted on the back side of the clamp body 1 , and the back side of the U-shaped plate 13 is fixedly connected to the end of the first shaft 61 away from the spherical groove wheel 62 .

[0053] The rotation period of the ball sheave mechanism 6 is 90 degrees.

[0054] In this embodiment, the implementation scenario is specifically as follows: when it is necessary to detect the cross-section of a concrete sample block, first control the two clamping plates 12 of the two fixture bodies 1 to clamp the two sides of the top and bottom of the concrete sample block to be detected. Then, control the drilling mechanism 3 to drill continuously arranged parallel holes on the top surface of the clamped concrete sample block. Next, through the locking shaft mechanism 8, lock the first shaft 61 to restrict the rotation of the fixture body 1 around the first shaft 61. Finally, drive the second shaft 63 to rotate. Since the first shaft 61 is locked, the lever 64 cannot drive the spherical grooved wheel 62 to drive the first shaft 61 to rotate, and the spherical grooved wheel 62 and the first shaft 61 will also flip upward with the second shaft 63 as the axis. The two fixture bodies 1 flip upward simultaneously, and the concrete sample block with drilled continuous holes can be pried open, and the cross-section of the concrete sample block is oriented towards the damage detection mechanism 2 to realize the function of this device for detecting the cross-section of the concrete sample block, expanding the detection range. The preset damage information of the cross-section also includes air bubbles.

[0055] Finally: The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A building concrete damage detection device based on Internet of Things technology, comprising two symmetrically arranged fixture bodies (1). On one side of the fixture body (1), two clamping rods (11) with adjustable vertical spacing are installed. At the end of the clamping rod (11) far from the fixture body (1), a clamping plate (12) is fixed, and it is characterized in that: The two clamping plates (12) perform synchronous and opposite-direction movements, and a concrete sample block is clamped between the two clamping plates (12). A damage detection mechanism (2) and a drilling mechanism (3) are arranged between the two fixture bodies (1). The damage detection mechanism (2) is used to capture an image of the top surface of the concrete sample block, and compare the image content with preset damage information to obtain the damage information on the surface of the inspected concrete sample block. The preset damage information includes depressions, protrusions, and cracks on the surface of the concrete sample block. The drilling mechanism (3) is used to drill holes in the top of the concrete sample block clamped by the clamping plates (12). A spherical grooved wheel mechanism (6) is arranged on the back side of the fixture body (1). The spherical grooved wheel mechanism (6) includes a first shaft (61). The first shaft (61) is fixedly connected to the fixture body (1), and the first shaft (61) is coaxially arranged with the symmetry axis of the two clamping rods (11). A spherical grooved wheel (62) is fixedly installed at the end of the first shaft (61) away from the fixture body (1). The spherical grooved wheel mechanism (6) further includes a second shaft (63) perpendicular to the first shaft (61) in the horizontal plane. A dial rod (64) is fixedly connected to the end of the second shaft (63) close to the spherical grooved wheel (62). The dial rod (64) is adapted to the spherical grooved wheel (62), and the second shaft (63) rotates to drive the fixture body (1) to rotate intermittently.

2. The building concrete damage detection device based on Internet of Things technology according to claim 1, characterized in that: A vertical guide hole (15) is opened on one side of the fixture body (1). Two symmetric sliders (17) are slidably arranged inside the guide hole (15). The two clamping rods (11) are respectively fixed on the two sliders (17), and racks (18) are fixedly installed on the two sliders (17). A central gear (16) is rotatably connected to the center position on one side of the fixture body (1). The two racks (18) are both meshed with the central gear (16), and the two racks (18) are centrally symmetric about the center of the central gear (16). A driving cylinder (14) is installed on the side surface of the fixture body (1). The output shaft of the driving cylinder (14) is fixedly connected to one of the sliders (17).

3. The building concrete damage detection device based on Internet of Things technology according to claim 2, characterized in that: A torque adjustment mechanism (4) is installed on one side of the fixture body (1) between the two clamping rods (11). A force arm output mechanism (5) is further arranged on the side of the torque adjustment mechanism (4) close to the concrete sample block. The force arm output mechanism (5) includes a first rack (51) and a second rack (52) arranged in a cross shape, and arc-shaped rods (53) are fixedly connected to the output ends of the first rack (51) and the second rack (52). The two arc-shaped rods (53) respectively correspond to the front and back sides of the concrete sample block. When the two clamping plates (12) release the concrete sample block, the torque adjustment mechanism (4) drives the arc-shaped rods (53) on the left and right fixture bodies (1) to push the concrete sample block to deflect around its vertical central axis in the same direction.

4. The building concrete damage detection device based on the Internet of Things technology according to claim 3, characterized in that: The torque adjustment mechanism (4) includes an installation box (41). Inside the installation box (41), an identical upper gear (42) and a lower gear (43) are rotatably provided, and the upper gear (42) and the lower gear (43) are vertically coaxially distributed. A sleeve (44) is fixedly connected to the center of the top of the upper gear (42) and the center of the bottom of the lower gear (43). A piston rod (45) is movably provided at the end of the sleeve (44) outside the installation box (41). The end of the piston rod (45) away from the sleeve (44) is always in sliding contact with the clamping rod (11). A spiral groove (441) is provided inside the sleeve (44). A convex block adapted to the spiral groove (441) is provided at the end of the piston rod (45) inside the sleeve (44). When the two clamping rods (11) approach or move away from each other, the rotation directions of the upper gear (42) and the lower gear (43) are opposite. The first rack (51) and the second rack (52) both slidably penetrate through the side surface of the installation box (41), and the first rack (51) meshes with the upper gear (42), and the second rack (52) meshes with the lower gear (43); The torque adjustment mechanism (4) further includes a driving member (40). The fixed end of the driving member (40) is hinged to the fixture body (1), and the output end of the driving member (40) is hinged to the back side of the installation box (41).

5. The building concrete damage detection device based on Internet of Things technology according to claim 4, characterized in that: A first spring is sleeved on the rod wall of the piston rod (45), and the two ends of the first spring are respectively in pressing contact with the sleeve (44) and the clamping rod (11).

6. The building concrete damage detection device based on the Internet of Things technology according to claim 5, characterized in that: Positioning shafts (7) are provided on both outer sides at the crossing position of the first rack (51) and the second rack (52). Guide rods (71) are movably installed at the upper and lower ends of the positioning shaft (7). The guide rods (71) movably penetrate through the clamping rod (11), and a second spring is sleeved on the rod wall of the guide rod (71).

7. The building concrete damage detection device based on the Internet of Things technology according to claim 1 or 6, characterized in that: A shaft locking mechanism (8) is sleeved on the shaft wall of the first shaft (61). The shaft locking mechanism (8) includes a plurality of centripetally arranged limiting rods, and convex edges are provided at the ends of the limiting rods.

8. The device for detecting the damage of building concrete based on the Internet of Things technology according to claim 7, wherein: Axial grooves are provided on the surface of the shaft wall of the first shaft (61), and the grooves are adapted to the convex edges.

9. The building concrete damage detection device based on Internet of Things technology according to claim 1, wherein: A U-shaped plate (13) is fixedly installed on the back side of the fixture body (1). The back side of the U-shaped plate (13) is fixedly connected to the end of the first shaft (61) away from the spherical grooved pulley (62). The clamping plate (12) completely covers the side of the concrete sample block.

10. The building concrete damage detection device based on the Internet of Things technology according to claim 1, characterized in that: The rotation period of the spherical grooved pulley mechanism (6) is 90 degrees.

Images