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CN-224231702-U - Concrete internal defect detection device

CN224231702UCN 224231702 UCN224231702 UCN 224231702UCN-224231702-U

Abstract

The utility model provides a concrete internal defect detection device, which relates to the technical field of concrete detection and comprises a shell, wherein a handheld handle is arranged on the shell, one surface of the shell, which is attached to concrete, is of an opening structure, four corners of the shell are rotatably provided with a pair of rolling wheels, each knocking head is fixedly provided with a guide rod, the guide rods penetrate through the shell in a sliding manner, a driving piece is used for periodically driving the pair of knocking heads to knock a concrete wall surface, and an acoustic wave receiving piece is arranged on the shell and used for collecting concrete reverberation signals after knocking in the shell, filtering the signals and outputting the signals after noise filtration. The utility model has the advantages of convenient operation and low cost, can reduce the detection cost and the use threshold, and improves the detection efficiency of the engineering site.

Inventors

  • LI HUI
  • WANG ZHERUI
  • LI HAICHAO

Assignees

  • 青岛市建筑工程质量检测中心有限公司

Dates

Publication Date
20260512
Application Date
20250403

Claims (8)

  1. 1. A concrete internal defect detection device, comprising: The concrete mixer comprises a shell (1), wherein a handheld handle (10) is arranged on the shell (1), one surface of the shell (1) attached to concrete is of an opening structure, and idler wheels (12) are rotatably arranged at four corners of the shell (1); The knocking heads (2) are a pair, guide rods (21) are fixedly arranged on each knocking head (2), and the guide rods (21) are arranged in a sliding penetrating mode on the shell (1); The driving piece (3) is used for periodically driving the pair of knocking heads (2) to knock the concrete wall surface; The sound wave receiving element (4), sound wave receiving element (4) are located on casing (1), be used for gathering concrete reverberation signal after beating in casing (1), and export after carrying out noise filtration to the reverberation signal.
  2. 2. The device for detecting the internal defects of the concrete according to claim 1, wherein elastic pieces (211) are arranged on the guide rods (21), and the elastic pieces (211) are used for driving the knocking head (2) to impact the concrete wall surface.
  3. 3. The device for detecting the internal defects of the concrete according to claim 2, wherein the driving piece (3) comprises a pull rod (31), a limit rod (32) and a first spring (33), wherein inserting grooves (311) are formed at two ends of the pull rod (31), the limit rod (32) is inserted into the inserting grooves (311) in a sliding manner, the first spring (33) is arranged in the inserting grooves (311), one end of the first spring is connected to the bottom wall of the inserting grooves (311), and the other end of the first spring is fixedly connected to the limit rod (32); The hand-held handle (10) is in an n shape, guide grooves (111) are formed in rod bodies (11) at two ends of the hand-held handle (10) along the length direction, one end of the limiting rod (32) is slidably connected in the guide grooves (111), the guide grooves (111) comprise guide surfaces (1111) and unlocking inclined surfaces (1112), and the unlocking inclined surfaces (1112) at two sides are not located on the same plane; An unlocking hole (321) and a limiting hole (322) are formed in the limiting rod (32), and the unlocking hole (321) is communicated with the limiting hole (322); One end of the guide rod (21) far away from the knocking head (2) is fixedly provided with a pulling end head (212), the diameter of the pulling end head (212) is the same as that of the unlocking hole (321), the diameter of the limiting hole (322) is smaller than that of the pulling end head (212), and one end of the pulling end head (212) far away from the knocking head (2) is in a pointed cone shape; The unlocking inclined surface (1112) is used for driving the limiting rod (32) to slide along the axial direction of the guide groove (111), so that the unlocking hole (321) is opposite to the pulling end (212), and the pulling end (212) is unlocked.
  4. 4. A device for detecting internal defects of concrete according to claim 3, characterized in that the bottom walls of the unlocking hole (321) and the limiting hole (322) are provided with guiding bevels (3221); And/or, the elastic piece (211) comprises a second spring (2111), the second spring (2111) is sleeved on the guide rod (21), the second spring (2111) is positioned in the shell (1), one end of the second spring (2111) is fixedly connected to the knocking head (2), and the other end of the second spring is fixedly connected to the shell (1).
  5. 5. The device for detecting the defects in the concrete according to claim 1, wherein a magnet ring (5) is embedded in the position of the casing (1) penetrating out of the guide rod (21), and a metal ring (23) capable of being attracted with the magnet ring (5) is fixedly arranged on the guide rod (21).
  6. 6. The concrete internal defect detection apparatus according to claim 1, wherein the sound wave receiving member (4) includes a pair of high-sensitivity microphones (41), sound input ends of the pair of high-sensitivity microphones (41) are respectively provided toward the tap head (2), sound output ends of the high-sensitivity microphones (41) are located outside the housing (1), and a noise filter element is disposed in the high-sensitivity microphones (41).
  7. 7. The concrete internal defect detection apparatus according to claim 1, wherein the opening position of the housing (1) is fixedly provided with a rubber ring (6) in the circumferential direction.
  8. 8. The concrete internal defect detection apparatus according to claim 1, wherein the opening caliber of the housing (1) is tapered inwardly.

Description

Concrete internal defect detection device Technical Field The utility model relates to the technical field of concrete detection, in particular to a concrete internal defect detection device. Background Concrete is a widely used structural material in construction, bridge and road engineering, and internal defects (such as honeycomb, holes, cracks, inclusions, debonding, etc.) may affect the safety and service life of the structure. Therefore, detection of defects inside concrete is of great importance. At present, common concrete defect detection methods comprise infrared thermal imaging detection, ultrasonic detection, X-ray detection and the like. Although the method can realize defect identification to a certain extent, the problems of higher equipment cost and complex detection flow are generally existed. For example, infrared thermal imaging detection and X-ray detection equipment is expensive, has high maintenance cost and has high requirements on detection environment, and ultrasonic detection is common, but special equipment is required to be provided, and the operation and data analysis of professionals are relied on, so that the use cost is increased. Disclosure of utility model The utility model aims to provide a concrete internal defect detection device which is convenient to operate and low in cost, can reduce detection cost and use threshold, and improves the detection efficiency of an engineering site. The utility model is realized by the following technical scheme: a concrete internal defect detection apparatus comprising: The concrete mixer comprises a shell, wherein a handheld handle is arranged on the shell, one surface of the shell, which is attached to concrete, is of an opening structure, and idler wheels are rotatably arranged at four corners of the shell; the knocking heads are a pair, guide rods are fixedly arranged on each knocking head, and the guide rods penetrate through the shell in a sliding manner; The driving piece is used for periodically driving the pair of knocking heads to knock the concrete wall surface; The sound wave receiving element is arranged on the shell and is used for collecting concrete reverberation signals after knocking in the shell, and outputting the reverberation signals after noise filtering. Further, elastic pieces are arranged on the guide rods and used for driving the knocking heads to impact the concrete wall surface. Further, the driving piece comprises a pull rod, a limiting rod and a first spring, wherein the two ends of the pull rod are provided with inserting grooves, the limiting rod is inserted into the inserting grooves in a sliding mode, the first spring is arranged in the inserting grooves, one end of the first spring is connected to the bottom wall of the inserting grooves, and the other end of the first spring is fixedly connected to the limiting rod; The hand-held handle is n-shaped, guide grooves are formed in rod bodies at two ends of the hand-held handle along the length direction, one end of the limiting rod is connected in the guide grooves in a sliding mode, the guide grooves comprise guide surfaces and unlocking inclined surfaces, and the unlocking inclined surfaces at two sides are not located on the same plane; an unlocking hole and a limiting hole are formed in the limiting rod, and the unlocking hole is communicated with the limiting hole; the end, away from the knocking head, of the guide rod is fixedly provided with a pulling end, the diameter of the pulling end is the same as that of the unlocking hole, the diameter of the limiting hole is smaller than that of the pulling end, and the end, away from the knocking head, of the pulling end is in a pointed cone shape; The unlocking inclined surface is used for driving the limiting rod to slide along the axial direction of the guide groove, so that the unlocking hole is opposite to the pulling end, and the pulling end is unlocked. Further, the bottom walls of the unlocking hole and the limiting hole are provided with guide bevel angles; And/or the elastic piece comprises a second spring, the second spring is sleeved on the guide rod, the second spring is positioned in the shell, one end of the second spring is fixedly connected to the knocking head, and the other end of the second spring is fixedly connected to the shell. Further, a magnet ring is embedded in the position of the shell penetrating out of the guide rod, and a metal ring capable of being attracted with the magnet ring is fixedly arranged on the guide rod. Further, the sound wave receiving element comprises a pair of high-sensitivity microphones, sound input ends of the pair of high-sensitivity microphones are respectively arranged towards the knocking head, sound output ends of the high-sensitivity microphones are positioned on the outer side of the shell, and noise filtering elements are arranged in the high-sensitivity microphones. Further, the opening position of the shell is fixedly provided with a rubber rin