Concrete crack depth detector

Abstract

A concrete crack depth detector relates to the technical field of concrete, and comprises an ultrasonic depth detector body, the top of the ultrasonic depth detector body is fixedly connected with a mounting rack, the mounting rack comprises a measuring rod, the measuring rod is in sliding fit with two groups of clamping mechanisms, and plane transducers are clamped in the clamping mechanisms. According to the utility model, the ultrasonic depth detector body and the mounting rack are integrated, and the mounting rack is provided with the clamping mechanism which can be adjusted in a sliding manner to clamp the planar transducer, so that the crack depth detection can be completed by one person, and the detection flexibility and convenience are improved.

Description

Technical Field

[0001] This utility model relates to the field of concrete technology, and more specifically, to a concrete crack depth probe. Background Technology

[0002] Currently, numerous large-scale medical buildings and other public facilities both domestically and internationally have experienced structural defects and cracks to varying degrees during their construction. Some of these cracks have extended to the reinforcing steel, severely compromising the overall structural integrity of the concrete structures, leading to frequent leaks, dampness in basements, and ultimately posing a significant threat to structural safety. A deeper investigation reveals that the primary cause is the concentration of internal stress during concrete use, resulting in micro-cracks in areas with structural defects. These micro-cracks gradually expand and extend over time, eventually forming more noticeable cracks.

[0003] The planar test method is a non-destructive testing technique used to detect the depth of concrete cracks, particularly suitable for cracks less than 500mm deep. When using an ultrasonic testing instrument for the planar test, technicians must carefully arrange measuring points at the location of the crack to be measured, and simultaneously perform acoustic time measurements at different distances, both across and without the crack. Specifically, the results of acoustic time measurements without and across the crack will show certain differences, and these differences are the key basis for calculating the crack depth.

[0004] In practice, this testing technology requires close cooperation between two technicians: one operates the control panel, while the other handles the two planar transducers coated with coupling agent. This two-person operation mode ensures the accuracy and reliability of the test. However, in situations with insufficient manpower, the high requirements for the number and coordination of operators mean that one person cannot complete the testing task independently, which undoubtedly limits its application flexibility to some extent. Utility Model Content

[0005] The purpose of this invention is to solve the problems mentioned in the background art, and to propose a concrete crack depth probe.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A concrete crack depth detector includes an ultrasonic depth detector body. A mounting frame is fixedly connected to the top of the ultrasonic depth detector body. The mounting frame includes a measuring rod. Two sets of clamping mechanisms are slidably fitted on the measuring rod. A planar transducer is clamped in the clamping mechanism.

[0008] Furthermore, the ultrasonic depth probe body is equipped with a connector, and the connector is connected to a planar transducer via a connecting line.

[0009] Furthermore, the measuring rod is marked with graduations.

[0010] Furthermore, the mounting frame also includes connecting rods and grippers. Each end of the measuring rod is provided with a connecting rod, and the end of the connecting rod is provided with a gripper, which cooperates with the ultrasonic depth probe body.

[0011] Furthermore, the clamping mechanism includes a guide sleeve, the measuring rod is slidably fitted with the guide sleeve, an adjusting bolt is threaded onto the guide sleeve, a support rod is formed on one side of the guide sleeve, a retaining ring is provided on the support rod, and a planar transducer is engaged in the retaining ring.

[0012] Furthermore, a connecting plate is fixedly connected to the guide sleeve, and an arrow is installed on the connecting plate.

[0013] Furthermore, the inner edge line of the planar transducer is aligned with the position of the arrow.

[0014] Furthermore, the adjusting bolt enables the guide sleeve to move along the measuring rod and be positioned at a point on the measuring rod.

[0015] Furthermore, a mounting cavity is formed at the top of the gripper, a guide rod is provided in the mounting cavity, a slider is sleeved on the guide rod, the slider can slide along the mounting cavity, a sliding elongated hole is formed above the mounting cavity, the connecting rod passes through the sliding elongated hole and is connected to the slider, and a flexible spring is sleeved on the guide rod.

[0016] Furthermore, the flexible spring can drive the measuring rod to move closer to the surface to be measured, thereby enabling the planar transducer to better fit the surface to be measured.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model integrates the ultrasonic depth probe body and the mounting frame. The mounting frame is equipped with a sliding and adjustable clamping mechanism to clamp the planar transducer, which enables a single person to operate and complete the crack depth detection, improving the flexibility and convenience of the detection. At the same time, the design of the scale on the measuring rod, the arrow on the guide sleeve, and the flexible spring further improves the accuracy of the measurement and the fit between the planar transducer and the surface to be measured. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0020] Figure 3 This is a schematic diagram of the sliding mechanism;

[0021] The components include: 1 gripper, 11 mounting cavity, 12 guide rod, 13 slider, 14 flexible spring, 15 sliding elongated hole, 2 connecting rod, 3 measuring rod, 31 scale, 4 guide sleeve, 41 adjusting bolt, 42 support rod, 43 retaining ring, 51 connecting plate, 52 arrow, 100 ultrasonic depth probe body, and 200 planar transducer. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments:

[0023] First Embodiment

[0024] like Figures 1-3 As shown, a concrete crack depth probe includes an ultrasonic depth probe body 100. A mounting frame is fixedly connected to the top of the ultrasonic depth probe body. The mounting frame includes a measuring rod 3, and two sets of clamping mechanisms are slidably fitted onto the measuring rod. A planar transducer 200 is clamped within each clamping mechanism. The ultrasonic depth probe body can be purchased externally from Haichuang Gaoke's HC-CS202 crack depth tester or other ultrasonic detection equipment with similar functions and high accuracy.

[0025] Furthermore, the ultrasonic depth probe body is provided with a connector 101, and the connector is connected to a planar transducer via a connecting line.

[0026] The design is detailed, with the measuring rod marked with a scale of 31. This scale can be laser-engraved to ensure it is not easily worn during long-term use.

[0027] The distance between the two planar transducers is adjusted by moving the measuring rod through the clamping mechanism, and it is necessary to ensure that the inner edge lines of the two planar transducers meet the distance requirements, such as 100mm, 150mm or 200mm.

[0028] In at least one embodiment, the mounting bracket further includes a connecting rod 2 and a clamp 1. Each end of the measuring rod is provided with a connecting rod, and the end of the connecting rod is provided with a clamp. The clamp cooperates with the ultrasonic depth probe body and can be clamped on the ultrasonic depth probe body.

[0029] In some embodiments, the grippers and the ultrasonic depth sounder body are further secured together by bolts. For example, the grippers have positioning holes, and the ultrasonic depth sounder body has threaded holes; the bolts pass through the positioning holes and are threaded into the threaded holes. This securing method ensures a robust connection between the mounting bracket and the ultrasonic depth sounder body, enhancing the durability of the equipment.

[0030] In at least one embodiment, the clamping mechanism includes a guide sleeve 4, the measuring rod is slidably fitted with the guide sleeve, an adjusting bolt 41 is threadedly connected to the guide sleeve, a support rod 42 is formed on one side of the guide sleeve, a retaining ring 43 is provided on the support rod, and a planar transducer is engaged in the retaining ring.

[0031] Furthermore, a connecting plate 51 is fixedly connected to the guide sleeve, and an arrow 52 is mounted on the connecting plate, pointing towards scale 31. The arrow can be marked with a conspicuous color for easy observation. The arrow's placement allows the operator to visually see the position of the planar transducer, facilitating quick adjustment and positioning.

[0032] In a more detailed design, the inner edge line of the planar transducer is aligned with the position of the arrow.

[0033] Furthermore, the adjusting bolt allows the guide sleeve to move along the measuring rod and be positioned at a point on the measuring rod, and the adjusting bolt can abut against the surface of the measuring rod to limit relative movement between the two. The threaded portion of the adjusting bolt may have a self-locking design to prevent loosening during measurement.

[0034] Before operation, ensure that the ultrasonic depth sounder body, mounting bracket, clamping mechanism, and planar transducers are complete and in good working order. Confirm that the scale on the measuring rod is clearly readable for subsequent adjustment of the distance between the two planar transducers. Apply couplant to the planar transducers as needed to improve measurement accuracy. A specialized couplant with high acoustic impedance matching and low attenuation can be used to ensure effective ultrasonic wave transmission. Ensure that the jaws at the end of the connecting rod can grip the ultrasonic depth sounder body. For a more secure connection, bolts can be used to secure it through the positioning holes on the jaws and the threaded holes on the ultrasonic depth sounder body. Slide the guide sleeve onto the measuring rod and adjust its position as needed. Rotate the adjusting bolt to securely position the guide sleeve on the measuring rod.

[0035] Adjust the positions of the two clamping mechanisms on the measuring rod according to the measurement requirements to change the distance between the two planar transducers. Ensure that the inner edges of the two planar transducers meet the distance requirements, such as 100mm, 150mm, or 200mm. The distance can be precisely adjusted by observing the arrow on the guide sleeve and the scale on the measuring rod. Place the planar transducer, coated with couplant, onto the surface of the concrete crack to be measured. Operate the ultrasonic depth sounder to begin measuring the crack depth. Record and analyze the measurement results. After measurement, release the clamps and remove the mounting bracket and clamping mechanisms from the ultrasonic depth sounder. Clean the couplant from the planar transducers and properly store all components for future use.

[0036] Second Embodiment

[0037] The difference from the first embodiment lies in the different mounting bracket design.

[0038] like Figure 3 As shown, the mounting frame includes a measuring rod 3, a connecting rod 2, and a clamp 1. Each end of the measuring rod is provided with a connecting rod, and the end of the connecting rod is provided with a clamp. The clamp cooperates with the ultrasonic depth probe body and can be clamped on the ultrasonic depth probe body.

[0039] Furthermore, a mounting cavity 11 is formed at the top of the gripper, a guide rod 12 is provided in the mounting cavity, a slider 13 is sleeved on the guide rod, the slider can slide along the mounting cavity, a sliding elongated hole 15 is formed above the mounting cavity, the connecting rod passes through the sliding elongated hole and is connected to the slider, and a flexible spring 14 is sleeved on the guide rod.

[0040] In a more detailed design, the flexible spring can drive the measuring rod to move closer to the surface to be measured, thereby enabling the planar transducer to better fit the surface to be measured.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A concrete crack depth probe, comprising an ultrasonic depth probe body, characterized in that, A mounting bracket is fixedly connected to the top of the ultrasonic depth probe body. The mounting bracket includes a measuring rod, and two sets of clamping mechanisms are slidably fitted on the measuring rod. A planar transducer is clamped within each clamping mechanism. The mounting bracket also includes connecting rods and grippers. Each end of the measuring rod has a connecting rod, and the end of each connecting rod has a gripper that engages with the ultrasonic depth probe body. The clamping mechanism includes a guide sleeve, on which the measuring rod is slidably fitted. An adjusting bolt is threaded onto the guide sleeve. A support rod is formed on one side of the guide sleeve, and a retaining ring is provided on the support rod. A planar transducer is engaged within the retaining ring. The top of the gripper forms a mounting cavity, and a guide rod is provided inside the mounting cavity. A slider is sleeved on the guide rod and can slide along the mounting cavity. A sliding elongated hole is formed above the mounting cavity. The connecting rod passes through the sliding elongated hole and is connected to the slider. A flexible spring is sleeved on the guide rod.

2. The concrete crack depth detector according to claim 1, characterized in that, The measuring rod is marked with graduations.

3. The concrete crack depth detector according to claim 1, characterized in that, A connecting plate is fixedly connected to the guide sleeve, and an arrow is installed on the connecting plate.

4. The concrete crack depth detector according to claim 3, characterized in that, The inner edge line of the planar transducer is aligned with the position of the arrow.

5. The concrete crack depth detector according to claim 1, characterized in that, The adjusting bolt allows the guide sleeve to move along the measuring rod and be positioned at a point on the measuring rod.

6. The concrete crack depth detector according to claim 1, characterized in that, The flexible spring can drive the measuring rod to move closer to the surface to be measured, thereby enabling the planar transducer to better fit the surface to be measured.

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