Anchor rod detection device

Abstract

The embodiment of the invention discloses an anchor rod detection device. The device comprises a box body, a detection assembly and a telescopic piece, the box body is provided with a through hole, and an anchor rod supported on the tunnel side wall can penetrate through the through hole. A part of the detection assembly is arranged in the box body, and the detection assembly is used for knocking the anchor rod and can receive and detect reflection elastic waves generated by the anchor rod; the telescopic piece is rotatably connected with the box body through an axis extending in the first direction. The anchor rod detection device provided by the embodiment of the invention is convenient for assisting detection personnel to detect anchor rods at high positions of side slopes and tunnels without climbing, climbing equipment is not needed for auxiliary operation, and the safety measure cost of detection work is reduced.

Description

Technical Field

[0001] This invention relates to the field of anchor bolt technology, and more specifically to an anchor bolt testing device. Background Technology

[0002] Anchor bolt support is a reinforcement method used in slope, deep foundation pit, and underground cavern engineering. With its simple structure, convenient construction, low cost, and strong adaptability, it has been widely used in highway, railway, and water conservancy and hydropower projects, serving as a crucial guarantee for project safety. However, due to the concealed nature of anchor bolt projects, complex construction processes, and numerous influencing factors, problems such as insufficient anchor bolt length and poor grouting quality can easily occur, posing significant safety hazards to the project quality. Therefore, after construction, non-destructive testing using the acoustic reflection method based on elastic wave theory is commonly employed to inspect the length of the anchor bolts and the density of the grouting. The quality of the anchor bolt construction is then evaluated based on the test results.

[0003] Article 7.1.5 of the "Code for Non-destructive Testing of Anchor Bolts in Hydropower and Water Conservancy Projects" (DL / T5424-2009) requires that "random sampling should be used for testing of each part," which sets requirements for the randomness and distribution of the test objects. That is, the high, medium and low parts of the tunnel sidewalls, arch tops, and arch foot slopes must all be tested to ensure random coverage and guarantee that the test results can objectively reflect the quality of the actual project.

[0004] In mainstream anchor bolt non-destructive testing instruments, the accelerometer and vibration source are configured separately. The testing personnel must be close to the anchor bolt being tested, fix the accelerometer to the end of the anchor bolt, and tap the head of the anchor bolt with the vibration source to complete the anchor bolt test. However, most anchor bolts in engineering projects are installed at a height of more than two meters. The testing work requires the use of scaffolding, support trolleys, and aerial work platforms, which are considered high-altitude operations and pose a risk of falls from height. In order to save on operating costs and the cost of high-altitude measures, there are frequent incidents of risky operations using non-standard high-altitude equipment (such as unapproved ladders, loaders, backhoes, etc.). Summary of the Invention

[0005] The present invention aims to at least partially solve one of the technical problems in the related art.

[0006] Therefore, embodiments of the present invention propose an anchor bolt detection device that facilitates the detection of anchor bolts on slopes and in tunnels without requiring personnel to climb to heights, thereby reducing the cost of safety measures for the detection work.

[0007] The anchor bolt detection device of this invention includes a housing, a detection component, and a telescopic component; the housing has a through hole through which an anchor bolt supporting the tunnel sidewall can pass; part of the detection component is disposed in the housing, and the detection component is used to strike the anchor bolt and can receive and detect the reflected elastic wave generated by the anchor bolt; the telescopic component is rotatably connected to the housing via an axis extending in a first direction.

[0008] In use, the anchor bolt detection device of this invention involves holding the telescopic component and bringing the housing close to the anchor bolt on the tunnel sidewall. The telescopic component is used to adjust the relative position and angle between the housing and the anchor bolt to ensure correct anchor bolt positioning, allowing the anchor bolt to pass through the perforation in the housing and aligning it with the detection component. This ensures good contact between the detection component and the anchor bolt. By rotatably connecting the telescopic component to the housing via an axis extending in a first direction, the housing can be adjusted within a certain angle range. Then, the detection component is activated, striking the anchor bolt head to generate elastic waves. The received reflected elastic waves are then processed by the detection component to analyze the anchor bolt length and grout density.

[0009] Compared with related technologies, by setting up a detection device, it is possible to assist inspection personnel in inspecting anchor bolts on slopes and tunnels at high altitudes without having to climb to heights. This reduces the cost of safety measures for inspection work, effectively avoids the safety risks of climbing to heights, and also reduces interference from cross-operations on the work surface, thereby improving the efficiency of inspection work. The auxiliary device can assist inspection personnel in inspecting anchor bolts within a 15m range, ensuring random selection of the coverage area for anchor bolt inspection, making it easier to meet the requirement of "random sampling for inspection of each part" in the specifications, and improving the quality of non-destructive testing results for anchor bolts.

[0010] In some embodiments, the detection components of the anchor bolt detection device of the present invention include an electromagnetic vibration source, an acceleration sensor, and an anchor bolt detector; the electromagnetic vibration source is disposed in the housing for striking the anchor bolt placed in the housing; the acceleration sensor is disposed in the housing for receiving and transmitting the reflected elastic wave generated by striking the anchor bolt; the anchor bolt detector is electrically connected to the acceleration sensor for receiving and processing the reflected elastic wave transmitted outward by the acceleration sensor.

[0011] In some embodiments, the extension direction of the electromagnetic vibration source and the extension direction of the acceleration sensor of the anchor bolt detection device of the present invention are both parallel to the axial direction of the anchor bolt.

[0012] In some embodiments, the anchor bolt detection device of the present invention further includes an elastic element disposed between the inner side wall of the box and the acceleration sensor.

[0013] In some embodiments, the anchor bolt detection device of the present invention further includes a guide member, which passes through the perforation into the housing to guide the anchor bolt into the housing.

[0014] In some embodiments, the guide member of the anchor bolt detection device of the present invention is tapered, and the longitudinal section of the guide member gradually increases along the direction from the box body toward the guide member.

[0015] In some embodiments, the anchor bolt detection device of the present invention further includes a fastener connected between the electromagnetic vibration source and the housing.

[0016] In some embodiments, the anchor bolt detection device of the present invention further includes an electrical connection component, which is electrically connected between the electromagnetic vibration source and the power supply for controlling the switching of the electromagnetic vibration source.

[0017] In some embodiments, the electrical connection component of the anchor bolt detection device of the present invention includes a power supply, a cable and a jog switch, wherein the cable is electrically connected between the electromagnetic vibration source and the power supply, and the jog switch is disposed on the cable.

[0018] In some embodiments, the anchor bolt detection device of the present invention further includes a rotating connector, and the telescopic member is connected to the housing through the rotating connector. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the anchor bolt detection device according to an embodiment of the present invention.

[0020] Figure label:

[0021] 100. Detection device; 1. Housing; 101. Perforation; 2. Detection Components; 201. Electromagnetic Vibration Source; 202. Accelerometer; 204. Anchor Bolt Detector; 3. Expansion Joint; 4. Elastic Component; 5. Guide Component; 6. Fastener; 7. Electrical Connection Components; 701. Power Supply; 702. Cable; 703. Jog Switch; 8. Rotary Connector. Detailed Implementation

[0022] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0023] Reference Figure 1As shown, the anchor bolt detection device 100 of this embodiment includes a housing 1, a detection component 2, and a telescopic member 3. The housing 1 has a through hole 101 through which an anchor bolt supported on a tunnel sidewall can pass. Part of the detection component 2 is disposed inside the housing 1, and the detection component 2 is used to strike the anchor bolt and can receive the reflected elastic wave generated by the anchor bolt. The telescopic member 3 is rotatably connected to the housing 1 via an axis extending in a first direction.

[0024] When using the anchor bolt detection device 100 of this embodiment, the telescopic component 3 is held by hand, and the box 1 is brought close to the anchor bolt on the tunnel sidewall. The relative position and angle between the box 1 and the anchor bolt are adjusted by the telescopic component 3 to ensure that the anchor bolt is correctly positioned so that it can pass through the through hole 101 of the box 1, so that the anchor bolt corresponds with the detection component 2 and ensures good contact between the detection component 2 and the anchor bolt. By rotatably connecting the telescopic component 3 to the box 1 through the axis extending along the first direction, the box 1 can be adjusted within a certain angle range. Then, the detection component 2 is activated to strike the anchor bolt head to generate elastic waves. The detection component 2 then processes the received reflected elastic waves to analyze the anchor bolt length and grout density.

[0025] Compared with related technologies, by setting up the detection device 100, it is convenient for auxiliary inspection personnel to inspect anchor bolts on slopes and tunnels at high altitudes without climbing, reducing the cost of safety measures for inspection work, effectively avoiding the safety risks of climbing, and reducing interference from cross-operations on the work surface, thereby improving the efficiency of inspection work. The auxiliary device can assist inspection personnel in inspecting anchor bolts within a 15m range, ensuring random selection of the coverage area for anchor bolt inspection, making it easier to meet the requirement of "random sampling for inspection of each part" in the specifications, and improving the quality of non-destructive testing results for anchor bolts.

[0026] Optionally, the telescopic component 3 is a limiting telescopic rod, which facilitates length adjustment as needed.

[0027] In some embodiments, such as Figure 1 As shown, the detection component 2 of the anchor bolt detection device 100 in this embodiment of the invention includes an electromagnetic vibration source 201, an acceleration sensor 202, and an anchor bolt detector 204. The electromagnetic vibration source 201 is disposed inside the housing 1 to strike the anchor bolt placed inside the housing 1. The acceleration sensor 202 is disposed inside the housing 1 to receive and transmit the reflected elastic wave generated by striking the anchor bolt. The anchor bolt detector 204 is electrically connected to the acceleration sensor 202 to receive and process the reflected elastic wave transmitted outward by the acceleration sensor 202.

[0028] Optionally, the first direction is parallel to the front-back direction and orthogonal to the axis of the electromagnetic source 201.

[0029] In some embodiments, such as Figure 1As shown, in this embodiment of the invention, the extension directions of the electromagnetic vibration source 201 and the acceleration sensor 202 of the anchor bolt detection device 100 are both parallel to the axial direction of the anchor bolt. This arrangement ensures that both the electromagnetic vibration source 201 and the acceleration sensor 202 are along the axial direction of the anchor bolt, guaranteeing that the generation and reception directions of the elastic wave are consistent with the wave propagation direction, reducing signal attenuation and distortion, and improving the clarity and accuracy of the detection signal.

[0030] In some embodiments, such as Figure 1 As shown, the anchor bolt detection device 100 of this embodiment of the invention also includes an elastic element 4, which is disposed between the inner side wall of the housing 1 and the acceleration sensor 202. This method effectively eliminates the influence of vibration waves directly transmitted to the acceleration sensor 202 generated by the electromagnetic vibration source 201, thereby improving the signal-to-noise ratio of the acquired signal.

[0031] In some embodiments, such as Figure 1 As shown, the anchor bolt detection device 100 of this embodiment of the invention also includes a guide member 5. The guide member 5 passes through the through hole 101 into the housing 1 to guide the anchor bolt into the housing 1. The guide member 5 helps the electromagnetic vibration source 201 and the acceleration sensor 202 to quickly align with the exposed end of the anchor bolt, and ensures that the anchor bolt accurately passes through the housing 1 and is correctly positioned, reducing human error and improving the accuracy of detection.

[0032] In some embodiments, such as Figure 1 As shown, the guide member 5 of the anchor bolt detection device 100 in this embodiment of the invention is conical, and the longitudinal section of the guide member 5 gradually increases along the direction from the box body 1 toward the guide member 5. The conical design facilitates a gradual guiding effect, allowing the anchor bolt to be inserted into the box body 1 more smoothly and easily, reducing insertion resistance, reducing frictional resistance during anchor bolt insertion, and improving insertion efficiency.

[0033] In some embodiments, such as Figure 1 As shown, the anchor bolt detection device 100 of this embodiment of the invention also includes a fastener 6, which is connected between the electromagnetic vibration source 201 and the housing 1. The fastener 6 ensures that the electromagnetic vibration source 201 is firmly fixed to the housing 1, preventing loosening and displacement during the detection process and ensuring the consistency of the striking force.

[0034] In some embodiments, such as Figure 1 As shown, the anchor bolt detection device 100 of this embodiment further includes an electrical connection component 7, which is electrically connected between the electromagnetic vibration source 201 and the power supply 701 to control the switching of the electromagnetic vibration source 201. The electrical connection component 7 allows the testing personnel to control the switching of the electromagnetic vibration source 201 from a safe position without direct contact with the equipment, thus improving operational safety.

[0035] In some embodiments, such as Figure 1 As shown, the electrical connection component 7 of the anchor bolt detection device 100 in this embodiment of the invention includes a power supply 701, a cable 702, and a jog switch 703. The cable 702 is electrically connected between the electromagnetic vibration source 201 and the power supply 701, and the jog switch is located on the cable 702. The jog switch 703 provides an immediate response, allowing the detection personnel to start the detection at any time.

[0036] In some embodiments, such as Figure 1 As shown, the anchor bolt detection device 100 of this embodiment of the invention further includes a rotating connector 8, and the telescopic member 3 is connected to the housing 1 through the rotating connector 8. The rotating connector 8 facilitates the free adjustment of the telescopic member 3 within a certain angle range, enabling the detection device 100 to adapt to the anchor bolt detection requirements at different angles and positions.

[0037] Optionally, the rotary connector 8 is an aluminum alloy 5 / 8 to 1 / 4 quick-release rotary connector 8. This method provides an appropriate transmission ratio, ensuring the accuracy and stability of the rotary operation, and enabling the inspector to precisely adjust the inspection angle.

[0038] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0042] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0043] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An anchor bolt detection device (100), characterized in that, include: The box body (1) has a through hole (101) through which anchor rods supporting the tunnel sidewall can pass; The detection component (2) is partially disposed inside the housing (1), and the detection component (2) is used to strike the anchor rod and can receive and detect the reflected elastic waves generated by the anchor rod; Telescopic component (3) is rotatably connected to the housing (1) via an axis extending in a first direction.

2. The anchor bolt detection device (100) according to claim 1, characterized in that, The detection component (2) includes: An electromagnetic vibration source (201) is provided inside the housing (1) for striking the anchor rod placed inside the housing (1); An acceleration sensor (202) is installed inside the housing (1) to receive the reflected elastic waves generated by striking the anchor rod and to transmit them outward. An anchor bolt detector (204) is electrically connected to the acceleration sensor (202) to receive and process the reflected elastic wave transmitted outward by the acceleration sensor (202).

3. The anchor bolt detection device (100) according to claim 2, characterized in that, The extension direction of the electromagnetic vibration source (201) and the extension direction of the acceleration sensor (202) are both parallel to the axial direction of the anchor rod.

4. The anchor bolt detection device (100) according to claim 2, characterized in that, It also includes an elastic element (4), which is disposed between the inner side wall of the housing (1) and the acceleration sensor (202).

5. The anchor bolt detection device (100) according to claim 2, characterized in that, It also includes a guide (5), which is inserted through the perforation (101) into the housing (1) to guide the anchor rod into the housing (1).

6. The anchor bolt detection device (100) according to claim 5, characterized in that, The guide (5) is conical, and the longitudinal section of the guide (5) gradually increases along the direction of the box (1) toward the guide (5).

7. The anchor bolt detection device (100) according to claim 2, characterized in that, It also includes a fastener (6) which is connected between the electromagnetic source (201) and the housing (1).

8. The anchor bolt detection device (100) according to claim 2, characterized in that, It also includes an electrical connection component (7) which is electrically connected between the electromagnetic source (201) and the power supply (701) for controlling the switching of the electromagnetic source (201).

9. The anchor bolt detection device (100) according to claim 8, characterized in that, The electrical connection component (7) includes a power supply (701), a cable (702) and a jog switch (703). The cable (702) is electrically connected between the electromagnetic source (201) and the power supply (701), and the jog switch is located on the cable (702).

10. The anchor bolt detection device (100) according to claim 9, characterized in that, It also includes a rotating connector (8), through which the telescopic member (3) is connected to the housing (1).

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