Concrete crack detection device

Abstract

The present invention discloses a concrete crack detection device, comprising: a horizontal beam, which is arranged horizontally and is used to fit the surface of a concrete building; a vertical rod, which is arranged vertically at the middle position of the beam; a positioning mechanism, which is arranged at the middle position of the beam and is used to position the middle position of the beam at the position of the crack to be detected; a pair of slides, which are horizontally slidably connected to the lower end surface of the beam and are distributed on both sides of the vertical rod; a detector, which is arranged at the lower end of the vertical rod; a pair of detection probes, which are arranged on the slide and connected to the detector; and a driving mechanism, which is used to control the relative sliding of the slide. The present invention arranges a horizontal beam that fits the surface of a building, and arranges a positioning mechanism on the horizontal beam, so that the center position of the horizontal beam is positioned at the center position of the crack, and cooperates with a slide that can slide relatively to achieve the adjustment of the position of a pair of detection probes, and keeps the distance between the pair of detection probes and the center position of the crack always constant, so that there is no need for manual measurement and marking, and the detection accuracy is improved.

Description

Technical Field

[0001] The invention relates to the field of building crack detection, and in particular to a concrete crack detection device. Background Art

[0002] Ultrasonic crack depth detection is a non-destructive test method used to evaluate the depth of cracks in building materials such as concrete and stone. This method is based on the principle of ultrasonic propagation in materials. When there are cracks or other defects inside the material, the propagation speed and path of the ultrasonic wave will be affected. Therefore, the existence and depth of the crack can be determined by analyzing the propagation characteristics of the ultrasonic wave.

[0003] When traditional ultrasonic testing equipment is used to detect the depth of concrete cracks, if the crack test site of the structure has only one measurable surface and the estimated crack depth is no more than 500mm, the single-sided flat measurement method can be used.

[0004] First, the detection points are marked at equidistant intervals of 100mm, 150mm and 200mm in the crack-free areas on both sides of the crack, and then a pair of detection probes are placed at the corresponding detection points on both sides of the crack to detect the crack depth. However, this manual measurement spacing and marking method is not accurate, which can easily cause errors and affect the detection accuracy, and needs to be improved. Summary of the invention

[0005] In view of the deficiencies in the prior art, an object of the present invention is to provide a concrete crack detection device which has the effect of improving detection accuracy.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: A concrete crack detection device, comprising: Beams, which are horizontally placed and are used to fit the concrete building surface; A vertical rod, vertically arranged at the middle position of the crossbeam; A positioning mechanism is arranged at the middle position of the crossbeam and is used to position the middle position of the crossbeam at the crack position to be detected; A pair of slide seats, horizontally slidably connected to the lower end surface of the cross beam and distributed on both sides of the vertical rod; A detector, arranged at the lower end of the vertical rod; a pair of detection probes, disposed on the slide and connected to the detector; The driving mechanism is used to control the relative sliding of the slide seat.

[0007] In a preferred example, the present invention can be further configured as follows: the driving mechanism includes a driving block, a driving rod, a handle, a locking rod, a tension spring and a pull ring, the driving block is vertically slidably connected to the vertical rod, one end of the driving rod is rotationally connected to the driving block, and the other end is rotationally connected to the slide seat, the handle is vertically arranged on the driving block, the locking rod vertically penetrates the handle and the driving block, a row of locking holes for the locking rod to be inserted into the vertical rod is arranged, the tension spring is sleeved on the outer wall of the locking rod, and is used to drive the locking rod to insert into the locking hole, and the pull ring is used to control the sliding of the locking rod.

[0008] In a preferred example, the present invention can be further configured as follows: the vertical rod is provided with a scale line aligned with each of the locking holes, and the driving block is provided with an observation port aligned with the scale line.

[0009] In a preferred example, the present invention can be further configured as follows: the detection probe is slidably connected to the slide seat, and a spring is sleeved on the detection probe.

[0010] In a preferred example, the present invention can be further configured as follows: both ends of the beam are rotatably connected to mounting frames, a pressure rod for pressing the detection probe to prevent slippage is horizontally arranged at the lower end of the mounting frame, and a pull rod is arranged between the upper ends of a pair of mounting frames.

[0011] In a preferred example, the present invention can be further configured as follows: a sponge ring soaked in coupling agent is provided on the back side of the slide seat, the aperture of the sponge ring is smaller than the outer diameter of the detection probe, and the detection probe is passed through the sponge ring.

[0012] In a preferred example, the present invention can be further configured as follows: a snap ring is provided on the sponge ring, and a hook penetrating the snap ring is provided on the slide seat.

[0013] In a preferred example, the present invention can be further configured as follows: the positioning mechanism includes a positioning block, a positioning plate and a bidirectional screw, a pair of the positioning blocks are horizontally slidably connected to the cross beam, the positioning plate passes through the cross beam and is used to be inserted into the crack, the bidirectional screw is horizontally rotationally connected to the cross beam, and is threadedly connected to a pair of the positioning blocks.

[0014] In summary, the present invention has the following beneficial effects: 1. By setting a beam that fits the surface of the building and setting a positioning mechanism on the beam, the center of the beam is positioned at the center of the crack, and a slide seat that can slide relatively is used to adjust the position of a pair of detection probes, and the distance between the pair of detection probes and the center of the crack is always kept constant, thereby eliminating the need for manual measurement and marking, and improving the detection accuracy; 2. By setting up a sliding connection detection probe, the detection probe can be separated from the building surface when the slide seat slides, avoiding wear of the detection probe, thereby effectively ensuring the stable operation and accurate detection of the detection device; 3. By setting up a positioning mechanism with a simple structure and easy operation, the center position of the beam can be quickly positioned at the center position of the crack to ensure the accuracy of subsequent detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an embodiment; Figure 2 is a schematic structural diagram of a crossbeam of an embodiment; Figure 3 2 is a schematic structural diagram of a slide seat according to an embodiment of the present invention.

[0016] Figure numerals: 1. crossbeam; 11. mounting frame; 12. pressure rod; 13. pull rod; 2. vertical rod; 3. positioning mechanism; 31. positioning block; 32. positioning plate; 33. bidirectional screw; 4. sliding seat; 41. sponge ring; 42. snap ring; 43. hook; 5. detector; 6. detection probe; 61. spring; 7. driving mechanism; 71. driving block; 72. driving rod; 73. handle; 74. locking rod; 75. tension spring; 76. pull ring; 77. locking hole; 78. scale line; 79. observation port. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0018] like Figure 1 , Figure 2 , Figure 3 As shown, a concrete crack detection device includes a crossbeam 1, a vertical rod 2, a positioning mechanism 3, a slide seat 4, a detector 5, a detection probe 6 and a driving mechanism 7.

[0019] like Figure 1 , Figure 2 , Figure 3 As shown, the beam 1 is horizontally arranged and used to fit the concrete building surface, and the vertical rod 2 is vertically arranged in the middle of the beam 1. The positioning mechanism 3 is arranged in the middle of the beam 1 and is used to position the middle of the beam 1 at the crack position to be detected.

[0020] like Figure 1 , Figure 2 As shown, the positioning mechanism 3 includes a positioning block 31, a positioning plate 32 and a bidirectional screw 33. A pair of positioning blocks 31 are horizontally slidably connected to the beam 1, and the positioning plate 32 passes through the beam 1 and is used to be inserted into the crack. The bidirectional screw 33 is horizontally rotatably connected to the beam 1 and is threadedly connected to the pair of positioning blocks 31.

[0021] like Figure 1 , Figure 2 As shown, a pair of slides 4 are horizontally slidably connected to the lower end surface of the cross beam 1 and are distributed on both sides of the vertical rod 2. A detector 5 is arranged at the lower end of the vertical rod 2, and a pair of detection probes 6 are arranged on the slide 4 and connected to the detector 5.

[0022] like Figure 1 , Figure 2 As shown, the driving mechanism 7 is used to control the relative sliding of the slide seat 4 , and the driving mechanism 7 includes a driving block 71 , a driving rod 72 , a handle 73 , a locking rod 74 , a tension spring 75 and a pull ring 76 .

[0023] like Figure 1 , Figure 2 As shown, the driving block 71 is vertically slidably connected to the vertical rod 2, one end of the driving rod 72 is rotatably connected to the driving block 71, and the other end is rotatably connected to the slide 4. The handle 73 is vertically arranged on the driving block 71, the locking rod 74 vertically penetrates the handle 73 and the driving block 71, and the vertical rod 2 is provided with a row of locking holes 77 for the locking rod 74 to be inserted.

[0024] like Figure 1 , Figure 2 As shown, the vertical rod 2 is provided with a scale line 78 aligned with each locking hole 77, and the driving block 71 is provided with an observation port 79 aligned with the scale line 78. The tension spring 75 is sleeved on the outer wall of the locking rod 74 and is used to drive the locking rod 74 to insert into the locking hole 77, and the pull ring 76 is used to control the sliding of the locking rod 74.

[0025] When it is necessary to detect cracks on the surface of a building, the beam 1 is laid flat on the surface of the building so that the beam 1 fits the surface of the building. At the same time, a pair of positioning plates 32 are inserted into the cracks, and then the bidirectional screw 33 is controlled to rotate. The bidirectional screw 33 is used to drive a pair of positioning blocks 31 to move away from each other, and the positioning blocks 31 drive the positioning plates 32 to move synchronously.

[0026] Until a pair of positioning plates 32 completely abut against both sides of the crack, the crossbeam 1 is positioned and fixed, so that the center position of the crossbeam 1 is positioned at the center position of the crack, so that the distance between a pair of slide seats 4 and the center position of the crack is equal.

[0027] Then hold the handle 73 and use the thumb to control the pull ring 76 to slide outward. The pull ring 76 drives the locking rod 74 to move synchronously and disengage from the locking hole 77. Then use the handle 73 to drive the driving block 71 to move synchronously. At this time, the driving block 71 drives the driving rod 72 to move synchronously and control a pair of slide seats 4 to slide horizontally to achieve the spacing adjustment of the slide seats 4.

[0028] During the sliding movement of the driving block 71, the scale line 78 can be viewed through the observation port 79. After selecting a suitable position, the thumb is released, and the locking rod 74 is inserted into the locking hole 77 under the action of the tension spring 75 to fix the driving block 71, thereby indirectly fixing the slide 4, and also fixing the position of a pair of detection probes 6. Finally, the depth detection of the crack can be realized through the cooperation of the detection probe 6 and the detector 5.

[0029] Therefore, by setting a beam 1 that fits the surface of the building and setting a positioning mechanism 3 on the beam 1, the center position of the beam 1 is positioned at the center position of the crack, and in conjunction with a slide seat 4 that can slide relatively, the position of a pair of detection probes 6 can be adjusted, and the distance between the pair of detection probes 6 and the center position of the crack is always maintained constant, thereby eliminating the need for manual measurement and marking, thereby improving detection accuracy.

[0030] like Figure 1 , Figure 2 , Figure 3 As shown, the detection probe 6 is slidably connected to the slide seat 4, a spring 61 is sleeved on the detection probe 6, both ends of the beam 1 are rotatably connected to the mounting bracket 11, a pressure rod 12 is horizontally arranged at the lower end of the mounting bracket 11 for pressing the detection probe 6 to slide, and a pull rod 13 is arranged between the upper ends of a pair of mounting brackets 11.

[0031] When the position of the slide 4 and the detection probe 6 needs to be adjusted, the pull rod 13 is released. At this time, under the action of the spring 61, the detection probe 6 will be controlled to move outward to prevent the detection probe 6 from contacting the building surface and preventing wear or damage.

[0032] When the position of the detection probe 6 meets the detection requirements, the pull rod 13 is pulled outward, and the pull rod 13 drives the mounting frame 11 to flip, and the mounting frame 11 drives the pressure rod 12 to gradually press the detection probe 6 to slide inward, so that the detection probe 6 contacts the building surface for measurement.

[0033] Therefore, by providing a slidingly connected detection probe 6, the detection probe 6 can be separated from the building surface when the slide seat 4 slides, avoiding wear of the detection probe 6, thereby effectively ensuring stable operation and accurate detection of the detection device.

[0034] like Figure 3 As shown, a sponge ring 41 soaked with coupling agent is provided on the back side of the slide seat 4. The aperture of the sponge ring 41 is smaller than the outer diameter of the detection probe 6 and is for the detection probe 6 to pass through.

[0035] Therefore, when the detection probe 6 is controlled to contact the surface of the building, the detection probe 6 will automatically penetrate the sponge ring 41, so that the coupling agent on the sponge ring 41 is smeared on the surface of the detection probe 6, thereby improving the penetration during the detection process and improving the detection accuracy.

[0036] like Figure 3 As shown, a snap ring 42 is provided on the sponge ring 41, and a hook 43 penetrating the snap ring 42 is provided on the slide seat 4, so as to realize the rapid disassembly and installation of the sponge ring 41, and facilitate the sponge ring 41 to be fully soaked with coupling agent, thereby ensuring the stable operation of the detection probe 6.

[0037] The specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, such modifications are protected by the patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A concrete crack detection device, characterized in that: include: A crossbeam (1) is arranged horizontally and is used to fit the concrete building surface; A vertical rod (2) is vertically arranged at the middle position of the cross beam (1); A positioning mechanism (3) is arranged at the middle position of the crossbeam (1) and is used to position the middle position of the crossbeam (1) at the position of the crack to be detected; A pair of slide seats (4) horizontally slidably connected to the lower end surface of the crossbeam (1) and distributed on both sides of the vertical rod (2); A detector (5) is arranged at the lower end of the vertical rod (2); A pair of detection probes (6) are arranged on the slide seat (4) and connected to the detection instrument (5); The driving mechanism (7) is used to control the relative sliding movement of the slide seat (4).

2. A concrete crack detection device according to claim 1, characterized in that: The driving mechanism (7) comprises a driving block (71), a driving rod (72), a handle (73), a locking rod (74), a tension spring (75) and a pull ring (76); the driving block (71) is vertically slidably connected to the vertical rod (2); one end of the driving rod (72) is rotationally connected to the driving block (71), and the other end is rotationally connected to the sliding seat (4); the handle (73) is vertically arranged on the driving block (71); the locking rod (74) vertically penetrates the handle (73) and the driving block (71); a row of locking holes (77) for the locking rod (74) to be inserted is arranged on the vertical rod (2); the tension spring (75) is sleeved on the outer wall of the locking rod (74) and is used to drive the locking rod (74) to be inserted into the locking hole (77); the pull ring (76) is used to control the sliding of the locking rod (74).

3. A concrete crack detection device according to claim 2, characterized in that: The vertical rod (2) is provided with a scale line (78) aligned with each locking hole (77), and the driving block (71) is provided with an observation port (79) aligned with the scale line (78).

4. A concrete crack detection device according to claim 1, characterized in that: The detection probe (6) is slidably connected to the slide seat (4), and a spring (61) is sleeved on the detection probe (6).

5. A concrete crack detection device according to claim 4, characterized in that: Both ends of the crossbeam (1) are rotatably connected to mounting frames (11), a pressure rod (12) for pressing the detection probe (6) to slide is horizontally arranged at the lower end of the mounting frame (11), and a pull rod (13) is arranged between the upper ends of a pair of mounting frames (11).

6. A concrete crack detection device according to claim 5, characterized in that: A sponge ring (41) soaked in coupling agent is arranged on the back side of the sliding seat (4); the aperture of the sponge ring (41) is smaller than the outer diameter of the detection probe (6) and is used for the detection probe (6) to pass through.

7. A concrete crack detection device according to claim 6, characterized in that: The sponge ring (41) is provided with a snap ring (42), and the slide seat (4) is provided with a snap hook (43) penetrating the snap ring (42).

8. A concrete crack detection device according to claim 1, characterized in that: The positioning mechanism (3) comprises a positioning block (31), a positioning plate (32) and a bidirectional screw (33); a pair of the positioning blocks (31) are horizontally slidably connected to the crossbeam (1); the positioning plate (32) passes through the crossbeam (1) and is used to be inserted into the crack; the bidirectional screw (33) is horizontally rotatably connected to the crossbeam (1) and is threadedly connected to the pair of positioning blocks (31).

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