Portable dam crack detection device

Abstract

The utility model discloses a portable dam crack detection device, which comprises a box body, a coiling roller, a positioning assembly, a control assembly, a measuring scale, a host, a connecting line assembly, a planar transducer and a coil spring, the measuring scale and the host are arranged in the box body, the connecting line assembly and the planar transducer are also arranged in the box body, and the coil spring is arranged in the box body. The connecting wire assembly comprises a connecting wire and a storage shell, a wire winding roller is arranged in the storage shell, a coil spring is arranged in the wire winding roller, a positioning assembly is arranged between the wire winding roller and the storage shell, and a control assembly is arranged between the wire winding roller and the storage shell. Compared with the prior art, the automatic winding device has the advantages that a connecting wire can be released in a self-positioning mode, the positioning fluted disc can be separated from and meshed with the connecting fluted disc through the control assembly, automatic winding after use is achieved, and connection between a transducer and a host and detection of dam cracks are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of dam crack detection technology, specifically a portable dam crack detection device. Background Technology

[0002] A dam is a dike or weir that blocks water from a river, such as a reservoir or a river. A typical reservoir dam consists of a main dam, a secondary dam, a gravity dam, a normal spillway, an emergency spillway, a newly added emergency spillway, the Lingzheng Canal culvert, and a power station.

[0003] Dams can be divided into two main categories: concrete dams and earth-rock dams. The type of dam is selected based on a comprehensive comparison of factors such as the natural conditions of the dam site, building materials, construction site, diversion, construction period, and cost. Dams mainly serve the functions of flood control and power generation.

[0004] During long-term use, dams develop cracks in their surface walls due to geological movements and aging wear and tear on the dam structure. Maintenance personnel need to fill these cracks based on the site conditions. However, the required filling materials vary depending on the crack's depth. Therefore, it's crucial to select the appropriate filling material before construction. For cracks estimated to be no more than 500mm deep, ultrasonic detection is typically used for distance measurement. This involves placing two transducers on the concrete surfaces on either side of the crack to emit and receive ultrasonic signals. Based on the received signal characteristics, such as waveform changes and acoustic time difference, the approximate depth of the crack can be estimated. This detection method is simple to operate and has minimal data error.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art.

[0006] While existing technologies have solved some problems, they still have the following drawbacks:

[0007] The transducer needs to be connected to the ultrasonic detection host via a connecting cable. The host, connecting cable and transducer are used together to measure the depth of the crack at a fixed distance on the plane around the crack. The connecting cable needs to be laid out and wound up each time it is used, which can easily cause tangling and affect the detection process. It is also time-consuming to store the tangled cable. Utility Model Content

[0008] The purpose of this invention is to provide a portable dam crack detection device.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A portable dam crack detection device, comprising:

[0011] The housing contains a measuring ruler and a main unit. The housing also contains a connecting wire assembly and a planar transducer. The connecting wire assembly includes a housing and a connecting wire. The housing is composed of two detachable circular half-shells.

[0012] A cable winding roller is disposed inside the storage housing. The cable winding roller is rotatably connected to a rotating shaft inside the storage housing. A coil spring is disposed inside the cable winding roller. The inner end of the coil spring is fixedly connected to the rotating shaft of the storage housing, and the outer end of the coil spring is fixedly connected to the inner wall of the cable winding roller. A cable clamping groove for use with connecting wires is provided on one side of the outer side of the cable winding roller.

[0013] A positioning component is disposed between the storage housing and the winding roller. The positioning component includes a connecting toothed disc and a positioning toothed disc. The connecting toothed discs are symmetrically fixedly connected to the outer two sides of the winding roller, and each connecting toothed disc is rotatably connected to a rotating shaft inside the storage housing. The positioning toothed discs are symmetrically disposed on the inner two sides of the storage housing, and the positioning toothed discs and the connecting toothed discs mesh.

[0014] A control component is disposed between the positioning toothed disc and the housing.

[0015] Furthermore, both the connecting toothed disc and the positioning toothed disc are unidirectional rotating toothed discs. After the connecting toothed disc and the positioning toothed disc are engaged, the winding roller can rotate in the direction of the coil spring's winding and contraction.

[0016] Furthermore, the outer two sides of the winding roller are provided with wire clamping plates, the connecting wire is located between the wire clamping plates, the middle part of the connecting wire is clamped inside the wire clamping groove, and the two ends of the connecting wire extend to the front and rear of the housing respectively.

[0017] Furthermore, the control component includes:

[0018] Control panels are respectively disposed on both sides of the exterior of the housing;

[0019] Linkage rods, wherein several linkage rods are evenly distributed and fixedly connected to one side of the control panel that are close to each other;

[0020] A compression spring is sleeved on a connecting rod and is located between a positioning gear and a housing.

[0021] Furthermore, the other end of the connecting rod connects to the control plate and extends into the housing. Several small holes are evenly distributed on both sides of the housing to cooperate with the connecting rod. The other end of the connecting rod connects to the control plate and the side of the positioning gear plate that is far away from each other are fixedly connected.

[0022] This utility model provides a portable dam crack detection device, which has the following beneficial effects:

[0023] The connecting wire is inserted into the groove of the winding roller. The winding spring, combined with the positioning of the connecting toothed plate and the positioning toothed plate, enables self-positioning wire unwinding each time it is used. After use, the positioning toothed plate is disengaged from the connecting toothed plate by the control component, realizing automatic winding after use. This facilitates the connection between the transducer and the main unit and the detection of cracks in the dam. Attached Figure Description

[0024] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0025] Figure 1 This is a perspective view of a portable dam crack detection device according to this utility model.

[0026] Figure 2 This is a partial three-dimensional structure of a portable dam crack detection device according to this utility model. Figure 1 .

[0027] Figure 3 This is a partial three-dimensional structure of a portable dam crack detection device according to this utility model. Figure 2 .

[0028] Figure 4 This is a partial three-dimensional structure of a portable dam crack detection device according to this utility model. Figure 3 .

[0029] Figure 5 This is a partial three-dimensional structure of a portable dam crack detection device according to this utility model. Figure 4 .

[0030] Figure 6 This is a partial three-dimensional structure of a portable dam crack detection device according to this utility model. Figure 5 .

[0031] Figure 7 This is a three-dimensional enlarged view of a portable dam crack detection device according to this utility model.

[0032] The diagram shows: 1. Housing; 2. Winding roller; 3. Positioning assembly; 301. Connecting gear; 302. Positioning gear; 4. Control assembly; 401. Control board; 402. Connecting rod; 403. Compression spring; 5. Measuring ruler; 6. Main unit; 7. Connecting cable assembly; 8. Planar transducer; 9. Storage housing; 10. Connecting cable; 11. Coil spring; 12. Cable slot; 13. Cable retaining plate. Detailed Implementation

[0033] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses consistent with some aspects of this disclosure as detailed in the appended claims.

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0035] Example 1:

[0036] like Figures 1 to 7 As shown, this embodiment proposes a portable dam crack detection device, including a housing 1, a winding roller 2, a positioning component 3, a control component 4, a measuring ruler 5, a main unit 6, a connecting wire component 7, a planar transducer 8, and a coil spring 11 disposed between the winding roller 2 and the housing 9.

[0037] The case 1 is a lockable carrying case that can be opened in half from top to bottom. After the case 1 is opened in half, the inside is lined with shock-absorbing foam on both the top and bottom. Inside one side of the case 1, there is a main unit 6 for ultrasonic crack detection, model HC-U82. Inside the case cover on the same side where the main unit 6 is placed, there is also a steel measuring ruler 5 for measuring the depth of cracks in the dam. On the other side of the case 1, there are two neatly stored connecting lines 10 and two planar transducers 8 for attaching to the dam surface to measure the crack depth. In the planar area near the crack without cracks, the vertical direction is marked with distances of 100mm, 150mm and 200mm, and the marking lines at the corresponding distances are extended to facilitate the positioning of the planar transducers 8. The distance across the crack is marked. Different distances of 100mm, 150mm and 200mm are marked at equal intervals on both sides of the crack. The two connecting lines are connected to the receiving and transmitting ports on the main unit 6, respectively. The other end of the connecting lines is connected to the two planar transducers 8.

[0038] Next, set the parameters for the host 6. Select and click the "Concrete Crack Depth Detection" item. After entering the detection interface, enter the parameter setting section for the motor "Parameters". Enter the following parameters in sequence: create a new project name, component name, measuring point spacing (the measuring point spacing is the distance between the edges of the two planar transducers 8 that are close to each other, 100mm is used as an example in this application), measuring distance increment (the measuring distance increment is the distance that increases one by one between the edges of the two planar transducers 8, 50mm is used as an example in this application), and select the test procedure (the standard standard on which the detection is based, CECS21 is selected as an example in this application). After setting, click "Advanced Settings" to set the zero sound time (when setting the zero sound time, apply coupling agent to the detection surface of the connected planar transducers 8, then press the detection ends together tightly, click "Acquire", and after the waveform stabilizes and the time T value remains basically unchanged, click "OK". The corrected sound time value will be automatically recorded in the sound time correction column). In the transmit voltage settings, you can select a suitable voltage value as needed (the transmit voltage is the excitation voltage value that excites the transmitting transducer to generate ultrasonic pulses; the default value is generally sufficient. If adjusting the gain fails to adjust the first wave, you can set it to another voltage value). Set the waveform point count (the waveform point count is the number of points that make up the waveform; the default value is sufficient). Set the sampling period (the sampling period is the time interval between two sampling points; the default value is sufficient). Select the port connected to the connecting line 10 for the receive and transmit channels. After setting, click "OK". Apply coupling agent to the probe end of the planar transducer 8 and place it tightly against the mark (ensure that the inner edge line of the planar transducer 8 coincides with the ranging mark line). Adjust the first wave to a reasonable position, save the data, and repeat the operation until all three sets of data are measured. When measuring the distance across the crack, simply align the inner edge line of the planar transducer 8 with the symmetrical ranging mark lines on both sides of the crack for measurement. Continue until all ranging points are measured sequentially.

[0039] The measuring ruler 5, main unit 6, connecting cable 10, and planar transducer 8 are housed inside the same housing 1, forming a complete set for easy transport and detection of cracks in the dam estimated to be no more than 500mm in diameter. To prevent the connecting cable 10 from tangling and to facilitate its quick retraction, a storage housing 9 is installed outside the connecting cable 10. This housing 9 consists of two detachable circular half-shells connected by bolts. Inside the housing 9 is a winding roller 2, connected to the housing 9 by a rotating shaft, allowing the roller to rotate within the housing 9. To facilitate the winding and storage of the connecting cable 10, larger radius clamping plates 13 are installed on both outer edges of the winding roller 2, preventing the cable 10 from getting tangled in the gap between the housing 9 and the winding roller 2. The clamping plates 13 hold the connecting cable 10 in place on the winding roller 2.

[0040] In order to simultaneously wind up both ends of the connecting wire 10 by rotating the winding roller 2, a wire-locking groove 12 is opened on the outer side of the winding roller 2. The wire-locking groove 12 is semi-circular with both ends on the same straight line, and the wire-locking groove 12 is opened outside the inner cavity of the winding roller 2. The middle position of the connecting wire 10 is locked inside the wire-locking groove 12. When the winding roller 2 starts to rotate, both ends of the connecting wire 10 can be wound inward by the winding roller 2 simultaneously, so as to achieve simultaneous winding of both ends of the connecting wire 10. A coil spring 11 is set in the inner cavity of the winding roller 2. The inner end of the coil spring 11 is fixedly connected to the rotating shaft inside the housing 9, and the outer end of the coil spring 11 is fixedly connected to the inner cavity side wall of the winding roller 2. When the connecting wire 10 is pulled, the coil spring 11 is contracted. When the pulling of the connecting wire 10 is removed, the rebound of the coil spring 11 drives the winding roller 2 to wind up the connecting wire 10.

[0041] To position the winding roller 2 of the extended connecting line 10 and prevent it from constantly retracting due to the influence of the coil spring 11, connecting toothed discs 301 are fixedly connected to both sides of the outer surface of the winding roller 2. The two connecting toothed discs 301 are symmetrically arranged. Positioning toothed discs 302 are also provided on both sides of the inner surface of the housing 9. The positioning toothed discs 302 can mesh with the connecting toothed discs 301. The teeth of the connecting toothed discs 301 face away from each other, while the teeth of the positioning toothed discs 302 face each other. All teeth are triangular in shape, with one side inclined. On the other side, the winding roller 2 is horizontal. When the connecting line 10 is pulled, the inclined surfaces of the teeth on the connecting tooth 301 and the inclined surfaces of the teeth on the positioning tooth 302 are pressed and misaligned, causing the positioning tooth 302 to move away from each other. The connecting tooth 301 rotates. When the external force pulling the connecting line 10 is removed, the coil spring 11 retracts. The positioning tooth 302, which cannot rotate, blocks the plane on its teeth from contacting the plane on the teeth of the connecting tooth 301, preventing the winding roller 2 from rotating freely and thus achieving the positioning function.

[0042] To enable manual control of the rotation of the winding roller 2 for winding the connecting wire 10, this application provides control plates 401 on both sides of the outer casing 9. Three connecting rods 402 are fixedly connected to the side of each control plate 401 that is close to each other. Three evenly distributed small holes are opened on both sides of the outer casing 9. The other end of each connecting rod 402, connected to the control plate 401, passes through the small hole into the interior of the casing 9 and is fixedly connected to the side of the connecting gear 301 that is far apart from each other. By simultaneously pulling two control plates 401... The positioning gear 302 is disengaged from the connecting gear 301, and the coil spring 11 rotates the winding roller 2. In order to ensure that the positioning gear 302 can automatically engage with the connecting gear 301 when the control plate 401 is not pulled, a compression spring 403 is fitted on each connecting rod 402. The compression spring 403 is between the side of the positioning gear 302 that is disengaged from each other and the inner side of the housing 9, and compresses the positioning gear 302 in the direction that they are close to each other, so that the positioning gear 302 and the connecting gear 301 engage.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A portable dam crack detection apparatus, characterized by: Include: Box (1), the box (1) inside is equipped with measuring scale (5) and main machine (6), the box (1) inside is also equipped with connecting line assembly (7) and plane transducer (8), wherein connecting line assembly (7) includes receiving housing (9) and connecting line (10), the receiving housing (9) is composed of two half detachable circular half shells; Winding roller (2), the winding roller (2) is arranged in the inside of receiving housing (9), the winding roller (2) and the rotation connection of the pivot in the inside of receiving housing (9), the winding roller (2) is provided with winding spring (11) inside, the inner end of winding spring (11) and the pivot fixed connection of receiving housing (9), the outer end of winding spring (11) and the inner wall fixed connection of winding roller (2), the outside one side of winding roller (2) is provided with the wire slot (12) of cooperation connecting line (10) use; Positioning assembly (3), the positioning assembly (3) is arranged between receiving housing (9) and winding roller (2), positioning assembly (3) includes connecting toothed disc (301) and positioning toothed disc (302), the connecting toothed disc (301) is fixedly connected to the outside both sides of winding roller (2) symmetry, and the connecting toothed disc (301) is rotatably connected with the pivot in the inside of receiving housing (9), the positioning toothed disc (302) is symmetrically arranged in the inside both sides of receiving housing (9), the positioning toothed disc (302) and connecting toothed disc (301) are engaged; Control assembly (4), the control assembly (4) is arranged between positioning toothed disc (302) and receiving housing (9).

2. The portable dam crack detection apparatus of claim 1, wherein: The connecting toothed disc (301) and positioning toothed disc (302) are both one-way rotating toothed discs, after the engagement of the connecting toothed disc (301) and positioning toothed disc (302), the rotatable direction of winding roller (2) is the direction of winding spring (11) winding contraction.

3. The portable dam crack detection apparatus of claim 1, wherein: The outside both sides edges of winding roller (2) are provided with wire clamping plate (13), the connecting line (10) is located between wire clamping plate (13), the connecting line (10) is clamped in the inside of wire slot (12), and the both ends of connecting line (10) extend to the front and back outside receiving housing (9) respectively.

4. The portable dam crack detection apparatus of claim 1, wherein: The control assembly (4) includes: Control board (401), the control board (401) is arranged on the both sides outside receiving housing (9) respectively; Connecting rod (402), the connecting rod (402) is fixedly connected to the side of control board (401) close to each other evenly; Extrusion spring (403), the extrusion spring (403) is sleeved on connecting rod (402), and the extrusion spring (403) is located between positioning toothed disc (302) and receiving housing (9).

5. A portable dam crack detection apparatus as claimed in claim 4, wherein: The other end of the connecting rod (402) connected to the control board (401) extends to the inside of receiving housing (9), a plurality of evenly distributed small holes for cooperating with connecting rod (402) are arranged on the both sides outside receiving housing (9), and the other end of the connecting rod (402) connected to the control board (401) is fixedly connected to the side of positioning toothed disc (302) away from each other.

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